---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 02/22/20: 18 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:09 AM - Power Duece Schottky diodes (Randy C-GRPY) 2. 09:09 AM - Re: SPAM on Matronics (Richard Girard) 3. 10:11 AM - Re: Power Duece Schottky diodes (Charlie England) 4. 10:32 AM - Re: Power Duece Schottky diodes (Jeff Luckey) 5. 10:35 AM - Re: SPAM on Matronics (Charlie England) 6. 11:02 AM - Re: Power Duece Schottky diodes (Randy C-GRPY) 7. 11:39 AM - Re: Power Duece Schottky diodes (Randy C-GRPY) 8. 11:45 AM - Re: Power Duece Schottky diodes (Tim Olson) 9. 11:53 AM - Re: Re: Power Duece Schottky diodes (Charlie England) 10. 12:51 PM - Re: Re: Power Duece Schottky diodes (Jeff Luckey) 11. 12:54 PM - Re: Power Duece Schottky diodes (user9253) 12. 02:41 PM - Re: Re: Power Duece Schottky diodes (Charles Kuss) 13. 03:07 PM - Re: Power Duece Schottky diodes (Randy C-GRPY) 14. 04:33 PM - Re: Power Duece Schottky diodes (user9253) 15. 04:46 PM - Re: Power Duece Schottky diodes (johnbright) 16. 05:18 PM - Re: SPAM on Matronics (user9253) 17. 08:09 PM - mystery relay (johnbright) 18. 09:19 PM - Re: Power Duece Schottky diodes (Randy C-GRPY) ________________________________ Message 1 _____________________________________ Time: 09:09:05 AM PST US Subject: AeroElectric-List: Power Duece Schottky diodes From: "Randy C-GRPY" I want dual diodes to feed alternate power to critical components with only one power input. The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are there equally good, cheaper solutions to be considered? Thanks Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494939#494939 ________________________________ Message 2 _____________________________________ Time: 09:09:25 AM PST US From: Richard Girard Subject: Re: AeroElectric-List: SPAM on Matronics Charlie, I've always been afraid to delete spurious posts right out of the spam folder for fear it would start declaring real posts as spam (which happens occasionally anyway) You've given me hope that I can find a way to make it more reliable. Thanks Rick On Fri, Feb 21, 2020 at 12:15 PM Charlie England wrote: > ceengland7@gmail.com> > > On 2/21/2020 8:53 AM, user9253 wrote: > > > > I tried emailing Matt several times about spam on the AeroElectric List > > and other Matronics lists, but he has not responded. > > Maybe he will see this thread. Or maybe Bob N can contact Matt. > > I believe that a single person or company is using several aliases > listed below. > > The spammer can be sneaky, inserting aviation related material to make > his or her post appear to be legitimate. > > - > > Matt, > > The following threads are spam and need to be deleted: > > > > http://forums.matronics.com/viewtopic.php?t=18994 > > http://forums.matronics.com/viewtopic.php?t=29971 > > http://forums.matronics.com/viewtopic.php?t=36956 > > http://forums.matronics.com/viewtopic.php?t=45261 > > http://forums.matronics.com/viewtopic.php?t=64853 > > http://forums.matronics.com/viewtopic.php?t=16765515 > > http://forums.matronics.com/viewtopic.php?t=16768494 > > http://forums.matronics.com/viewtopic.php?t=16768495 > > http://forums.matronics.com/viewtopic.php?t=16768496 > > http://forums.matronics.com/viewtopic.php?t=16768497 > > http://forums.matronics.com/viewtopic.php?t=16768497 > > http://forums.matronics.com/viewtopic.php?t=16768498 > > http://forums.matronics.com/viewtopic.php?t=16770512 > > http://forums.matronics.com/viewtopic.php?t=16771914 > > http://forums.matronics.com/viewtopic.php?t=16772546 > > http://forums.matronics.com/viewtopic.php?t=16772753 > > http://forums.matronics.com/viewtopic.php?t=16773485 > > http://forums.matronics.com/viewtopic.php?t=16774897 > > http://forums.matronics.com/viewtopic.php?t=16774932 > > http://forums.matronics.com/viewtopic.php?t=16774950 > > http://forums.matronics.com/viewtopic.php?t=16774980 > > http://forums.matronics.com/viewtopic.php?t=16775011 > > http://forums.matronics.com/viewtopic.php?t=16775052 > > > > Please delete the following spammers who posted on the above threads: > > > > AdilahBisar > > Cameron Field > > Isaac > > jameslara > > johnmathew > > KatoGilliam > > KennethAmpbell > > MichealRobert > > pallaviparker > > stephen092 > > Verolla > > Whiteleg > > alisondaewon > > fengqingxue > > Jess > > sofia_bow1994 > > tomarc365 > > tripathiankush > > > > -------- > > Joe Gores > > > Spam is such a minor issue on the Matronics lists that I just tell my > email application to mark them as spam & move on. I use Thunderbird on > Windows7, BlueMail on my android phone, and Gmail's native web interface > if I'm on another computer. All will allow blocking spam, through > Gmail's 'smart' spam filtering. It can learn to block individual > senders, even if they come through an email portal like the Matronics > email lists. > > Can't offer any advice on the forum format, since I don't use it. > > Charlie =========== =========== =========== =========== =========== =========== > > -- =9CBlessed are the cracked, for they shall let in the light.=9D Groucho Marx ________________________________ Message 3 _____________________________________ Time: 10:11:52 AM PST US From: Charlie England Subject: Re: AeroElectric-List: Power Duece Schottky diodes On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY wrote: > > I want dual diodes to feed alternate power to critical components with > only one power input. The ones sold by Perihelion Designs seem to fit the > bill well but are quite pricey. Are they worth the cost or are there > equally good, cheaper solutions to be considered? > > Thanks > Randy > > There are hundreds of choices on ebay, at prices all over the map (even for the same device). ex: The stps12045tv is a dual 60A 45V device with an electrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks for them to arrive from China. Mouser (major electronics supplier) has them for $20. If you spend more time searching, you might find some even cheaper; I did several months ago. If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal tabbed device, to be sure the tab isn't electrically common to one of the leads. When browsing, just look for voltage above ~20V, at whatever current you need. Remember that current ratings assume significant heat sinking; if you want to avoid mounting on a heat sink, just oversize the device significantly for the job. A legit heat sink will probably cost a lot more than upsizing the device. :-) https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv ________________________________ Message 4 _____________________________________ Time: 10:32:59 AM PST US From: Jeff Luckey Subject: Re: AeroElectric-List: Power Duece Schottky diodes Randy, See if this meets your specs... https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=C ak7mXXNf1WSROaFc2i88g%3D%3D I'm using them to isolate my main buss in my RV-7. -Jeff On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England wrote: On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY wrote: I want dual diodes to feed alternate power to critical components with only one power input.=C2- The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are there equal ly good, cheaper solutions to be considered? Thanks Randy There are hundreds of choices on ebay, at prices all over the map (even for the same device). ex: The stps12045tv is a dual 60A 45V device with an ele ctrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks for them to arrive from China. Mouser (major electronics supplier) has them for $20. If you spend more time searching, you might find some even cheaper; I did several months ago. If you don't need that much current, you can get a whole bag of them for le ss than $10 in some cases. Do exercise caution when mounting any metal tabb ed device, to be sure the tab isn't electrically common to one of the leads . When browsing, just look for voltage above ~20V, at whatever current you need. Remember that current ratings assume significant heat sinking; if you want to avoid mounting on a heat sink, just oversize the device significan tly for the job. A legit heat sink will probably cost a lot more than upsiz ing the device. :-)https://www.ebay.com/sch/i.html?_from=R40&_trksid=m5 70.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0 &_odkw=stps12045tv ________________________________ Message 5 _____________________________________ Time: 10:35:46 AM PST US Subject: Re: AeroElectric-List: SPAM on Matronics From: Charlie England I never (or rarely) bother to delete spam out of the spam folder. Gmail automatically deletes spam from the folder after 30 days. The spam 'detecter' is also supposed to be capable of learning, so if you check your spam folder every week or so, and move any known-good emails back to the inbox (mark as 'not-spam' or 'not-junk') it will adjust to your preferences. I do occasionally find known-good emails in my spam folder, and sometimes they're from a Matronics list. They usually have a subject line that might look suspicious to a non-aviation or non-technical 'thinker'. Moving them to the inbox almost always results in gmail treating the sender or subject as OK after that. FWIW, Charlie On 2/22/2020 11:06 AM, Richard Girard wrote: > Charlie, I've always been afraid to delete spurious posts right out of > the spam folder for fear it would start declaring real posts as spam > (which happens occasionally anyway) You've given me hope that I can > find a way to make it more reliable. Thanks > > Rick > > On Fri, Feb 21, 2020 at 12:15 PM Charlie England > wrote: > > > > > On 2/21/2020 8:53 AM, user9253 wrote: > > > > > > I tried emailing Matt several times about spam on the > AeroElectric List > > and other Matronics lists, but he has not responded. > > Maybe he will see this thread. Or maybe Bob N can contact Matt. > > I believe that a single person or company is using several > aliases listed below. > > The spammer can be sneaky, inserting aviation related material > to make his or her post appear to be legitimate. > > - > > Matt, > > The following threads are spam and need to be deleted: > > > > http://forums.matronics.com/viewtopic.php?t=18994 > > http://forums.matronics.com/viewtopic.php?t=29971 > > http://forums.matronics.com/viewtopic.php?t=36956 > > http://forums.matronics.com/viewtopic.php?t=45261 > > http://forums.matronics.com/viewtopic.php?t=64853 > > http://forums.matronics.com/viewtopic.php?t=16765515 > > http://forums.matronics.com/viewtopic.php?t=16768494 > > http://forums.matronics.com/viewtopic.php?t=16768495 > > http://forums.matronics.com/viewtopic.php?t=16768496 > > http://forums.matronics.com/viewtopic.php?t=16768497 > > http://forums.matronics.com/viewtopic.php?t=16768497 > > http://forums.matronics.com/viewtopic.php?t=16768498 > > http://forums.matronics.com/viewtopic.php?t=16770512 > > http://forums.matronics.com/viewtopic.php?t=16771914 > > http://forums.matronics.com/viewtopic.php?t=16772546 > > http://forums.matronics.com/viewtopic.php?t=16772753 > > http://forums.matronics.com/viewtopic.php?t=16773485 > > http://forums.matronics.com/viewtopic.php?t=16774897 > > http://forums.matronics.com/viewtopic.php?t=16774932 > > http://forums.matronics.com/viewtopic.php?t=16774950 > > http://forums.matronics.com/viewtopic.php?t=16774980 > > http://forums.matronics.com/viewtopic.php?t=16775011 > > http://forums.matronics.com/viewtopic.php?t=16775052 > > > > Please delete the following spammers who posted on the above > threads: > > > > AdilahBisar > > Cameron Field > > Isaac > > jameslara > > johnmathew > > KatoGilliam > > KennethAmpbell > > MichealRobert > > pallaviparker > > stephen092 > > Verolla > > Whiteleg > > alisondaewon > > fengqingxue > > Jess > > sofia_bow1994 > > tomarc365 > > tripathiankush > > > > -------- > > Joe Gores > > > Spam is such a minor issue on the Matronics lists that I just tell my > email application to mark them as spam & move on. I use > Thunderbird on > Windows7, BlueMail on my android phone, and Gmail's native web > interface > if I'm on another computer. All will allow blocking spam, through > Gmail's 'smart' spam filtering. It can learn to block individual > senders, even if they come through an email portal like the Matronics > email lists. > > Can't offer any advice on the forum format, since I don't use it. > > Charlie > ========== > br> fts!) > r> > rel="noreferrer" > target="_blank">http://www.matronics.com/contribution > -Matt Dralle, List Admin. > ========== > - > Electric-List" rel="noreferrer" > target="_blank">http://www.matronics.com/Navigator?AeroElectric-List > ========== > FORUMS - > eferrer" target="_blank">http://forums.matronics.com > ========== > WIKI - > errer" target="_blank">http://wiki.matronics.com > ========== > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank">http://www.matronics.com/contribution > ========== > > > -- > > > Blessed are the cracked, for they shall let in the light. Groucho > Marx > > ________________________________ Message 6 _____________________________________ Time: 11:02:01 AM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "Randy C-GRPY" jluckey(at)pacbell.net wrote: > Randy, > > > See if this meets your specs... > > > https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D (https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D) > > > > > > I'm using them to isolate my main buss in my RV-7. > > > > > > > -Jeff > > > > On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England wrote: > > > > > > > > > On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY wrote: > > > > > > I want dual diodes to feed alternate power to critical components with only one power input. The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are there equally good, cheaper solutions to be considered? > > > > Thanks > > Randy > > > > > > > There are hundreds of choices on ebay, at prices all over the map (even for the same device). ex: The stps12045tv is a dual 60A 45V device with an electrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks for them to arrive from China. Mouser (major electronics supplier) has them for $20. If you spend more time searching, you might find some even cheaper; I did several months ago. > > > If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal tabbed device, to be sure the tab isn't electrically common to one of the leads. When browsing, just look for voltage above ~20V, at whatever current you need. Remember that current ratings assume significant heat sinking; if you want to avoid mounting on a heat sink, just oversize the device significantly for the job. A legit heat sink will probably cost a lot more than upsizing the device. :-) > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv (https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv) Thanks Jeff. That would probably work for my engine bus. It looks like that one has two power inputs with two discrete outputs. I was more thinking two power inputs with one power output. Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494947#494947 ________________________________ Message 7 _____________________________________ Time: 11:39:26 AM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "Randy C-GRPY" ceengland7(at)gmail.com wrote: > On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY wrote: > > > > > > I want dual diodes to feed alternate power to critical components with only one power input. The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are there equally good, cheaper solutions to be considered? > > > > Thanks > > Randy > > > > > > > > > > > There are hundreds of choices on ebay, at prices all over the map (even for the same device). ex: The stps12045tv is a dual 60A 45V device with an electrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks for them to arrive from China. Mouser (major electronics supplier) has them for $20. If you spend more time searching, you might find some even cheaper; I did several months ago. > > > If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal tabbed device, to be sure the tab isn't electrically common to one of the leads. When browsing, just look for voltage above ~20V, at whatever current you need. Remember that current ratings assume significant heat sinking; if you want to avoid mounting on a heat sink, just oversize the device significantly for the job. A legit heat sink will probably cost a lot more than upsizing the device. :-) > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv (https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv) Thanks Charlie. I will look into the link you provided. Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494948#494948 ________________________________ Message 8 _____________________________________ Time: 11:45:32 AM PST US Subject: Re: AeroElectric-List: Power Duece Schottky diodes From: Tim Olson That would work, but with a Vf of .7V, I think the idea that he has is likely to use the Schottky for less voltage drop. You can get similar Schottky diodes for similar prices and only end up with .2 or .3V drop. Tim On 2/22/20 12:28 PM, Jeff Luckey wrote: > Randy, > > See if this meets your specs... > > https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D > > > I'm using them to isolate my main buss in my RV-7. > > > > -Jeff > > On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England > wrote: > > > > > On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY > wrote: > > > > > I want dual diodes to feed alternate power to critical components > with only one power input. The ones sold by Perihelion Designs seem > to fit the bill well but are quite pricey. Are they worth the cost > or are there equally good, cheaper solutions to be considered? > > Thanks > Randy > > > There are hundreds of choices on ebay, at prices all over the map (even > for the same device). ex: The stps12045tv is a dual 60A 45V device with > an electrically isolated base (simpler mounting) that can be found for > as much as $75, or as little as 2 for $12, if you're willing to wait a > few weeks for them to arrive from China. Mouser (major electronics > supplier) has them for $20. If you spend more time searching, you might > find some even cheaper; I did several months ago. > > If you don't need that much current, you can get a whole bag of them for > less than $10 in some cases. Do exercise caution when mounting any metal > tabbed device, to be sure the tab isn't electrically common to one of > the leads. When browsing, just look for voltage above ~20V, at whatever > current you need. Remember that current ratings assume significant heat > sinking; if you want to avoid mounting on a heat sink, just oversize the > device significantly for the job. A legit heat sink will probably cost a > lot more than upsizing the device. :-) > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv > > ________________________________ Message 9 _____________________________________ Time: 11:53:44 AM PST US Subject: Re: AeroElectric-List: Re: Power Duece Schottky diodes From: Charlie England On 2/22/2020 1:00 PM, Randy C-GRPY wrote: > > > jluckey(at)pacbell.net wrote: >> Randy, >> >> >> See if this meets your specs... >> >> >> https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D (https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D) >> >> >> >> >> >> I'm using them to isolate my main buss in my RV-7. >> >> >> >> >> >> >> -Jeff >> >> >> >> On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England wrote: >> >> >> >> >> >> >> >> >> On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY wrote: >> >> >>> >>> I want dual diodes to feed alternate power to critical components with only one power input. The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are there equally good, cheaper solutions to be considered? >>> >>> Thanks >>> Randy >>> >>> >> >> There are hundreds of choices on ebay, at prices all over the map (even for the same device). ex: The stps12045tv is a dual 60A 45V device with an electrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks for them to arrive from China. Mouser (major electronics supplier) has them for $20. If you spend more time searching, you might find some even cheaper; I did several months ago. >> >> >> If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal tabbed device, to be sure the tab isn't electrically common to one of the leads. When browsing, just look for voltage above ~20V, at whatever current you need. Remember that current ratings assume significant heat sinking; if you want to avoid mounting on a heat sink, just oversize the device significantly for the job. A legit heat sink will probably cost a lot more than upsizing the device. :-) >> https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv (https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps12045tv) > > Thanks Jeff. That would probably work for my engine bus. It looks like that one has two power inputs with two discrete outputs. I was more thinking two power inputs with one power output. > > Randy The part # I quoted, and the link Jeff sent, are the same package. Jeff's version is 50A current handling instead of 60A and 200V instead of 40V. Either one can do what you want by simply tying the cathodes together. It'll cost you an extra ring terminal (and a butt splice, if you feed the output through a few inches of 'ballast' wire off each terminal). Charlie ________________________________ Message 10 ____________________________________ Time: 12:51:18 PM PST US From: Jeff Luckey Subject: Re: AeroElectric-List: Re: Power Duece Schottky diodes Randy, It's a 2 diode package.=C2- You can wire it any way you want. Let me know if you have any questions, -Jeff On Saturday, February 22, 2020, 11:11:46 AM PST, Randy C-GRPY wrote: jluckey(at)pacbell.net wrote: > Randy, > > > See if this meets your specs... > > > https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs =Cak7mXXNf1WSROaFc2i88g%3D%3D (https://www.mouser.com/productdetail/stmic roelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D) > > > > > > I'm using them to isolate my main buss in my RV-7. > > > > > > > -Jeff > > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England=C2- wrote:=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > > > > On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY=C2- wrote: > > > >=C2- > >=C2- I want dual diodes to feed alternate power to critical components with only one power input.=C2- The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are t here equally good, cheaper solutions to be considered? > >=C2- > >=C2- Thanks > >=C2- Randy > >=C2- > > > > > There are hundreds of choices on ebay, at prices all over the map (even f or the same device). ex: The stps12045tv is a dual 60A 45V device with an e lectrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks fo r them to arrive from China. Mouser (major electronics supplier) has them f or $20. If you spend more time searching, you might find some even cheaper; I did several months ago. > > > If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal ta bbed device, to be sure the tab isn't electrically common to one of the lea ds. When browsing, just look for voltage above ~20V, at whatever current yo u need. Remember that current ratings assume significant heat sinking; if y ou want to avoid mounting on a heat sink, just oversize the device signific antly for the job. A legit heat sink will probably cost a lot more than ups izing the device. :-) > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=d ual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps1204 5tv (https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw =dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps 12045tv) Thanks Jeff. That would probably work for my engine bus. It looks like that one has two power inputs with two discrete outputs.=C2- I was more think ing two power inputs with one power output. Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494947#494947 =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. - S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 11 ____________________________________ Time: 12:54:50 PM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "user9253" Mouser part: 511-STPS200170TV1Y Mouser part: 78-VS-QA250FA20 Mouser part: 863-MBRF20L45CTG only costs $0.83 -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494951#494951 ________________________________ Message 12 ____________________________________ Time: 02:41:56 PM PST US From: Charles Kuss Subject: Re: AeroElectric-List: Re: Power Duece Schottky diodes Jeff and Randy,=C2-The diode pack that Jeff supplied the link to is not i deal for our purposes. It's really designed for heavy duty welding equipmen t. It has a seven tenths of a volt dro forward. That means that when power is being supplied through that diode pack you lose seven tenths of a volt. You want to try and find one of these things that only has a 0.2 or 0.3 vol t drop in the forward Direction. Pull up the product data sheet for any of these that interest you. Then look on the datasheet for VF. That is the for ward voltage drop rating for that device. Charlie Sent from Yahoo Mail on Android On Sat, Feb 22, 2020 at 4:57 PM, Randy C-GRPY wrote: -- jluckey(at)pacbell.net wrote: > Randy, > > > See if this meets your specs... > > > https://www.mouser.com/productdetail/stmicroelectronics/stth10002tv1?qs =Cak7mXXNf1WSROaFc2i88g%3D%3D (https://www.mouser.com/productdetail/stmic roelectronics/stth10002tv1?qs=Cak7mXXNf1WSROaFc2i88g%3D%3D) > > > > > > I'm using them to isolate my main buss in my RV-7. > > > > > > > -Jeff > > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- On Saturday, February 22, 2020, 10:22:16 AM PST, Charlie England=C2- wrote:=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > >=C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- > > > > On Sat, Feb 22, 2020 at 11:14 AM Randy C-GRPY=C2- wrote: > > > >=C2- > >=C2- I want dual diodes to feed alternate power to critical components with only one power input.=C2- The ones sold by Perihelion Designs seem to fit the bill well but are quite pricey. Are they worth the cost or are t here equally good, cheaper solutions to be considered? > >=C2- > >=C2- Thanks > >=C2- Randy > >=C2- > > > > > There are hundreds of choices on ebay, at prices all over the map (even f or the same device). ex: The stps12045tv is a dual 60A 45V device with an e lectrically isolated base (simpler mounting) that can be found for as much as $75, or as little as 2 for $12, if you're willing to wait a few weeks fo r them to arrive from China. Mouser (major electronics supplier) has them f or $20. If you spend more time searching, you might find some even cheaper; I did several months ago. > > > If you don't need that much current, you can get a whole bag of them for less than $10 in some cases. Do exercise caution when mounting any metal ta bbed device, to be sure the tab isn't electrically common to one of the lea ds. When browsing, just look for voltage above ~20V, at whatever current yo u need. Remember that current ratings assume significant heat sinking; if y ou want to avoid mounting on a heat sink, just oversize the device signific antly for the job. A legit heat sink will probably cost a lot more than ups izing the device. :-) > https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=d ual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps1204 5tv (https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw =dual+schottky+diode&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=stps 12045tv) Thanks Jeff. That would probably work for my engine bus. It looks like that one has two power inputs with two discrete outputs.=C2- I was more think ing two power inputs with one power output. Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494947#494947 =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. - S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 13 ____________________________________ Time: 03:07:22 PM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "Randy C-GRPY" Thanks fellas for chiming in. I'm on the steep part of the learning curve. I was thinking about using the DSS2X61-0045A although I'm still planning on browsing for less expensive alternatives that will do the job adequately. I like the style of the one referenced simply because it looks ready to connect and mount. One question: For low current applications such as those in our aircraft, watts should be pretty low. How do I determine if a heat sink is required? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494954#494954 ________________________________ Message 14 ____________________________________ Time: 04:33:23 PM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "user9253" Most of the diodes discussed above will drop about 0.5 volts at 10 amps. The power loss will be 0.5 x 10 = 5 watts. That will produce lots of heat. Have you ever touched a 3 watt incandescent night light? So yes, use a heat sink with heat conductive paste. The aircraft structure can serve as a heat sink if it is aluminum. If the diode mounting surface is not electrically insulated from the diode terminals, then some type of dielectric heat conductive film must be used between the diode and mounting surface. If a TO220 diode is used, solder wires to the 3 terminals. A coating of E6000 will insulate and protect the terminals from vibration. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494957#494957 ________________________________ Message 15 ____________________________________ Time: 04:46:35 PM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "johnbright" Randy C-GRPY wrote: > Also, how are the electrical connections made to the pins of the diode typically? > The diodes with the prongs look like there should be a matching plug. > > Randy Hi Randy, those are TO-220 cases designed for circuit board mount. They have their very own Wikipedia page. https://en.m.wikipedia.org/wiki/TO-220 I suggest soldering to them like this: http://www.aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html Apply heat as quickly as possible to avoid damaging the diode. -------- John Bright, RV-6A, at FWF, O-360, dual SDSEFI EM-5-F Dual batt dual alt SDS dual EM-5-F but considering a single batt design. john_s_bright@yahoo.com, Newport News, Va Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494958#494958 ________________________________ Message 16 ____________________________________ Time: 05:18:25 PM PST US Subject: AeroElectric-List: Re: SPAM on Matronics From: "user9253" Charlie, I also use gmail. The spam that I am talking about is not delivered via email. It is posted on the Matronics website and is embedded into existing threads or else new threads are started by the scammer. Use this link, http://forums.matronics.com/viewforum.php?f=3 to read the AeroElectric List. No email is involved. The above listed spammers have posted a total of 68 times on Matronics. Compare that to VansAirforce where I have never seen any spam posted. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494959#494959 ________________________________ Message 17 ____________________________________ Time: 08:09:07 PM PST US Subject: AeroElectric-List: mystery relay From: "johnbright" Hi Bob, Question... what is the part number of this relay shown in Z-02 and Z-07? -------- John Bright, RV-6A, at FWF, O-360, dual SDSEFI EM-5-F Dual batt dual alt SDS dual EM-5-F but considering a single batt design. john_s_bright@yahoo.com, Newport News, Va Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494960#494960 Attachments: http://forums.matronics.com//files/relay_aux_alternator_168.jpeg ________________________________ Message 18 ____________________________________ Time: 09:19:13 PM PST US Subject: AeroElectric-List: Re: Power Duece Schottky diodes From: "Randy C-GRPY" user9253 wrote: > Most of the diodes discussed above will drop about 0.5 volts at 10 amps. > The power loss will be 0.5 x 10 = 5 watts. That will produce lots of heat. > Have you ever touched a 3 watt incandescent night light? > So yes, use a heat sink with heat conductive paste. > The aircraft structure can serve as a heat sink if it is aluminum. > If the diode mounting surface is not electrically insulated from the diode terminals, then some > type of dielectric heat conductive film must be used between the diode and mounting surface. > If a TO220 diode is used, solder wires to the 3 terminals. > A coating of E6000 will insulate and protect the terminals from vibration. Thank you Joe. I'm going to be mounting the diodes on the subpanel which is aluminium and most of the components will be less than 5 amps. Based on what you just said, I think that a heat sink likely isn't necessary other than using the panel. Randy Read this topic online here: http://forums.matronics.com/viewtopic.php?p=494961#494961 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.