Search found 3 matches

by mrwilder
Sat Jul 15, 2006 9:47 am
Forum: General Discussion
Topic: Solar Powered Car Battery Charger Circuit
Replies: 19
Views: 8503

Sounds like in order to keep a car charged, I'd need, say, 15 V @ at least 750mA just to keep up... so, lets just say I'd need between 12 and 15 watts to make a solar panel charger that will keep the battery charged.

Won't need a regulator, just a diode.

Thanks all.
by mrwilder
Fri Jul 14, 2006 7:23 pm
Forum: General Discussion
Topic: Solar Powered Car Battery Charger Circuit
Replies: 19
Views: 8503

Would a more normal circuit include a regulator? And by that, I'm assuming the circuit would then become a solar cell, an LM7812, a diode, then the battery. Should I assume that most cars' cigarette lighters are indeed "on" when the car itself is off? By the way, I'm in Phoenix, AZ, and it...
by mrwilder
Fri Jul 14, 2006 8:44 am
Forum: General Discussion
Topic: Solar Powered Car Battery Charger Circuit
Replies: 19
Views: 8503

Solar Powered Car Battery Charger Circuit

Hi all, Okay, there are a LOT of charger discussion threads here and on the web. However, I appear to be suffering from overload. What I need is a basic, easy to build solar powered trickle circuit to keep my car battery charged. The power source is already set: I have two solar panels rated at 15V ...