---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 12/31/13: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:32 AM - Re: Making fat wire fatter (Robert L. Nuckolls, III) 2. 07:11 AM - Re: E-bus diode (Robert L. Nuckolls, III) 3. 08:39 AM - Re: E-bus diode (Robert L. Nuckolls, III) 4. 10:29 AM - Re: E-bus diode (Thomas Blejwas) ________________________________ Message 1 _____________________________________ Time: 06:32:56 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Making fat wire fatter At 06:04 PM 11/21/2013, you wrote: >I need to terminate a piece of #2 or #4 (not sure which) welding >cable with a #0 wire terminal. So I want to increase the diameter >of the stranded copper a little bit so that it fits snugly within >the #0 wire terminal. > >I'm thinking about inserting the copper from some #12 solid wire >into the center of the #2 (or #4) to fatten it up and then crimping >it... Or maybe using a #6 brass machine screw inserted the same way. > >Suggestions? > >-Jeff http://tinyurl.com/ct36xen Bob . . . ________________________________ Message 2 _____________________________________ Time: 07:11:17 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: E-bus diode At 10:39 PM 12/30/2013, you wrote: Of course a higher voltage drop leads to a higher heat generated and, hence, for many of us, the attraction of the Schottky diodes. Yes . . . but how much heat . . . and what's the difference between the two technologies? I've been searching for single diodes to use in a modified version of Bob's new Z-07. I'll have 12-15 amps of current through one diode. That's a really BIG e-bus load . . . what's your anticipated alternator-out endurance for the battery you plan to carry? I'm wondering about a diode in the ITO-220 case, like http://www.digikey.com/product-detail/en/VFT4045BP-M3%2F4W/VFT4045BP-M3%2F4W-ND/3102977 With a forward of current of around 0.5V, the power to be thermally accommodated is less than 8W. and many heat sinks are available for the TO-220 configuration. The connections on the TO-220 must be soldered, but I'm less concerned about soldered connections after reading Bob's recent article in Kitplane. Heatsink? What's your airplane made of? If there's a few square inches of aluminum handy . . . why not simply sink it to the airplane? Are there other reasons for rejecting a diode like this? Suggest you sift the premises under which your procurement study is being conducted. This diode . . . http://tinyurl.com/nx5st6p will carry 15A handily simply bolted down to local sheet metal . . . but it's my fondest wish that it never sees even 1/2 that load. Not because the diode is at risk for overheating but because the battery is not being well conserved for alternator-out operations. Were it my airplane, a high-priority design goal would be to carry enough battery loaded so lightly by the e-bus that I could depart, punch through a cloud layer, suffer a failed alternator and still comfortably continue flight to airport of intended destination. The "e" in e-bus is for ENDURANCE. Bob . . . ________________________________ Message 3 _____________________________________ Time: 08:39:47 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: E-bus diode Opps. Stuck foot in mouth when I wrote: Were it my airplane, a high-priority design goal would be to carry enough battery loaded so lightly by the e-bus that I could depart, punch through a cloud layer, suffer a failed alternator and still comfortably continue flight to airport of intended destination. The "e" in e-bus is for ENDURANCE. You said Z-07 . . . electrically dependent engine. Okay, nice fat endurance numbers are simply not practical for battery-only ops. Okay, your quest for the "golden diode" is still no big deal. Suggest you consider the dual, TO-247 package devices, parallel the diodes for improved thermal resistance and simply mount to the airframe as suggested in the product literature I cited. Bob . . . ________________________________ Message 4 _____________________________________ Time: 10:29:08 AM PST US From: Thomas Blejwas Subject: Re: AeroElectric-List: E-bus diode Thanks Bob.- Just the kind of advice I was looking for.- -Glad I didn 't rush to respond to you earlier message.=0A=0ATom=0A=0A=0A=0A>___________ _____________________=0A> From: "Robert L. Nuckolls, III" =0A>To: aeroelectric-list@matronics.com =0A>Sent: Tuesday, De cember 31, 2013 9:38 AM=0A>Subject: Re: AeroElectric-List: E-bus diode=0A> =0A>=0A>Opps. Stuck foot in mouth when I wr ote:=0A>=0A>Were it my airplane, a high-priority design goal would be to ca rry enough battery loaded=0A>so lightly by the e-bus that I could depart, p unch through a cloud layer, suffer a failed=0A>alternator and still comfort ably continue flight to airport of intended destination. The=0A>"e" in e-bu s is for ENDURANCE.=0A>=0A>- You said Z-07 . . . electrically dependent =0A>- engine.- Okay, nice fat endurance numbers are simply=0A>- not practical for battery-only ops.=0A>=0A>- Okay, your quest for the "gold en diode" is still=0A>- no big deal. Suggest you consider the dual, TO-2 47=0A>- package devices, parallel the diodes for improved=0A>- therma l resistance and simply mount to the airframe=0A>- as suggested in the p - - - - - - - - - - - - - - -Matt Dralle, List =======0A>=0A>=0A>=0A>=0A>=0A> ------------------------------------------------------------------------------------- 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.