---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 10/20/10: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:54 PM - Re: Rolling my own WigWag Circuit (with timer)...need help (WORKING LINKS) (Andrew Zachar) 2. 12:54 PM - Coil-Cord report (Robert L. Nuckolls, III) 3. 01:48 PM - Ground Power / Tiedown Power Cart (Ed Gilroy) 4. 04:35 PM - Re: Re: Rolling my own WigWag Circuit (with timer)...need help (WORKING LINKS) (Dan Billingsley) 5. 06:40 PM - AUX Battery (Tim Andres) 6. 09:57 PM - Re: Coil-Cord report (Andy Hawes) ________________________________ Message 1 _____________________________________ Time: 12:54:03 PM PST US Subject: AeroElectric-List: Re: Rolling my own WigWag Circuit (with timer)...need help (WORKING LINKS) From: Andrew Zachar So, I finally hooked the thing up to my battery, and got the flasher to work. http://videos.videopress.com/h02JJyop/20101020_hd.mp4 This is a little fast for me, and it looks like one of the lights is favore d (a little longer illumination). Is there any way to slow down the flashes? Maybe a rate of 1Hz or 0.5 Hz. Do I need to build my own with a couple relays and a couple 555 ICs? -az On Mon, Oct 18, 2010 at 11:59 AM, Andrew Zachar wrote: > I wired up the flasher from B&C. I not sure it=92s working correctly. > > http://videos.videopress.com/uTQKDDyA/20101017-015_dvd.mp4 > > It=92s making a weird buzzing noise, and the first light comes on and sta rts > to dim just as then the second one starts to come on, but it doesn=92t re ally > finish a singe cycle. > > -az > -- Andrew Zachar andrew.d.zachar@gmail.com ________________________________ Message 2 _____________________________________ Time: 12:54:12 PM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Coil-Cord report A few days ago I posted a note suggesting that the I-Go DC power adapters for portable electronics MIGHT have as many as 6 conductors in the product's coil-cord. This was based on an observed 6-pin connector on the end. The adapter I ordered of Ebay arrived to day and I can report that the cord has only 3 conductors. Bob . . . ________________________________ Message 3 _____________________________________ Time: 01:48:33 PM PST US Subject: AeroElectric-List: Ground Power / Tiedown Power Cart From: Ed Gilroy Here's a subject I have not seen discussed, as of yet, on the list or in Bob's Aero-Electric Connection: We would like to construct a 12 volt, 24 volt, and 110 volt ground power cart for powering electrical tools, etc. and for jumping our club airplanes during the winters here in the wilds of Jersey. We have non-electrified outdoor tiedown spots. It would seem (2) 12 volt automotive batteries in series would be inexpensive and we would keep them charged via simple 12v solar chargers mounted on top of our storage shed. The 24V charging/inverting devices are hundreds of dollars. So how might such a circuit look to "isolate" the batteries for 12 volt charging and occasional 120v inverter usage from the 12v side and still allow on-demand 24/28V "jumping"? My thinking says manually isolate the 24v series circuit until I want to "jump" and just throw a switch to go 24v with everything else physically disconnected. Or is there a more elegant solution? Idiot proof would be best, remember these are pilots !!! I have thought about this for some months but see no simple solution to provide this "isolation" function but then I am a BSCS, not an EE. Thanks... Ed ________________________________ Message 4 _____________________________________ Time: 04:35:30 PM PST US From: Dan Billingsley Subject: Re: AeroElectric-List: Re: Rolling my own WigWag Circuit (with timer)...need help (WORKING LINKS) yes, that would be the way to do it playing with the caps and resistors to get =0Athe speed you want. Do a search on timing circuits and you will find a bunch. =0ALet=C2- us know how it goes.=0ADan=0A=0A=0A=0A=0A___________ _____________________=0AFrom: Andrew Zachar =0AT o: aeroelectric-list@matronics.com=0ASent: Wed, October 20, 2010 12:50:14 P M=0ASubject: AeroElectric-List: Re: Rolling my own WigWag Circuit (with =0A timer)...need help (WORKING LINKS)=0A=0ASo, I finally hooked the thing up t o my battery, and got the flasher to work. =0A=0Ahttp://videos.videopress.c om/h02JJyop/20101020_hd.mp4=0A=0AThis is a little fast for me, and it looks like one of the lights is favored (a =0Alittle longer illumination). Is th ere any way to slow down the flashes? Maybe a =0Arate of 1Hz or 0.5 Hz.=0A =0ADo I need to build my own with a couple relays and a couple 555 ICs?=0A =0A-az=0A=0A=0AOn Mon, Oct 18, 2010 at 11:59 AM, Andrew Zachar =0Awrote:=0A=0AI wired up the flasher from B&C. I not sure it=99s working correctly.=0A>http://videos.videopress.com/uTQKDDyA/20 101017-015_dvd.mp4=0A>It=99s making a weird buzzing noise, and the fi rst light comes on and starts to =0A>dim just as then the second one starts to come on, but it doesn=99t really finish =0A>a singe cycle.=0A>-az ============ =0A ________________________________ Message 5 _____________________________________ Time: 06:40:19 PM PST US From: "Tim Andres" Subject: AeroElectric-List: AUX Battery I'm designing my system using a small AUX Battery and single Alt. I want to charge the aux battery with a Schottkey diode. The AUX battery will power the avionics during start to prevent brown out and can be used as clearance delivery and/or a backup bus for the EFIS/430W GPS/Comm. Others I know of who have done it this way also used a 50 ohm resistor in series with the diode for reasons no one can really explain to me. The battery is a small 7ah sealed unit and I plan to charge it thru the diode and a 7.5 amp fuse. Is there any reason to use a resistor in this configuration? Thanks, Tim Andres ________________________________ Message 6 _____________________________________ Time: 09:57:51 PM PST US Subject: Re: AeroElectric-List: Coil-Cord report From: Andy Hawes Thanks for following up Bob, I ended up contacting Dennis at autacusa Very friendly folks and were kind enough to send out a sample before I ordered. 7 conductor, 24 awg, 12 inch straight lead, 12 inch coil, 12 inch straight and I believe a 3/4 inch diameter. I'll follow up with everyone once it arrives. I believe the entire assembly would be around 17.00 in case anyone needs anything similar in the future -- Andy On 10/20/10 2:53 PM, "Robert L. Nuckolls, III" wrote: > > > A few days ago I posted a note suggesting that the > I-Go DC power adapters for portable electronics > MIGHT have as many as 6 conductors in the product's > coil-cord. This was based on an observed 6-pin > connector on the end. > > The adapter I ordered of Ebay arrived to day and > I can report that the cord has only 3 conductors. > > > Bob . . . > > > > > ------------------------------------------------------------------------------------- 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.