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Mod | | | Forums66 Topics128,095 Posts1,056,468 Members48,443 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I think this is a nice design piece that somebody has worked out. It apparently can supply 10 Amps.
thanks, Neilroy | | | | | Joined: Jun 2007 Posts: 90 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2007 Posts: 90 | Good info, I've been looking for a setup like this to build. Thanks! | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Yes, that is a very nicely done design and an excellent article. Adding the power transistor gives you 10a. The whole shebang shouldn't cost any more than a MacDonald’s happy meal.
I appreciate the effort these guy put into things like this and then they offer it freely to the membership. Definitely good people.
Denny Graham
Sandwich, IL
Last edited by Denny Graham; 02/01/2009 8:46 PM.
Denny G
Sandwich, IL
| | | | | Joined: Jan 2008 Posts: 493 Shop Shark | | Shop Shark Joined: Jan 2008 Posts: 493 | I built this and it works just fine. The total price was about $20 but I also got a 10 pack of the diodes and some heat sink compound. That is if you can fine a heat sink out of something. I used one off of an old dead 60's am radio. | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Hey Neil, ya got a couple of pic of that
board/unit that ya made? Where did you
find the power transistor?
Denny G
Last edited by Denny Graham; 02/05/2009 1:38 PM.
Denny G
Sandwich, IL
| | | | | Joined: Jan 2008 Posts: 493 Shop Shark | | Shop Shark Joined: Jan 2008 Posts: 493 | I will shoot a photo when my wife gets back from her nephew's wedding with my camera. I used an NTE181 power transistor. It crossed to the 2N5881 even though it doesn't look like it will handle as much current. http://www.nteinc.com/specs/100to199/pdf/nte180.pdf It seems to work fine so far and was all I could find locally. If it passes away I will order the 2N5881 online. | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | That transistor orta work just fine in that application. The only retail outlet store where you can walk into and buy something off the shelf is Rat Shack and they are removing more and more inventory daily. The largest power transistor they list now can only handle about a third of that current.
I buy mail order from Mouser but hate to place a small order and usually end up buying ten times what I need just to justify the UPS shipping costs.
Denny G
Denny G
Sandwich, IL
| | | | | Joined: Jun 2001 Posts: 169 'Bolter | | 'Bolter Joined: Jun 2001 Posts: 169 | A good place for the DIY crowd to buy electronic parts is www.digikey.comThey don't have a minimum for small orders, quick ship, and good prices. I use them all the time for this type of thing. Paul | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I have used Digikey too. They carry a lot of good electronics. | | |
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