Joule Thief

[resonanceman]

Gary:

Duh!  Now why didn't I think of that? ?  I feel like an idiot. 

Would the 2.7 volts in the B-cap be too much for 2 x 1.2 volts (2.4 volts) in the rechargeables?  If that is OK then this is a brilliant, and simple, solution.

Thank you,

Bill

Bill

It should  be almost ideal.
Remember  your  charge voltage has to be higher than your battery voltage to push the electrons   in.

gary

[Pirate88179]

Thanks guys.  I will give this a shot when I can.  It may take a while to charge them but...I don't care, it will be free.

Thanks again.

Bill

[dasimpson]

i would test with your dmm to what milliamps you get then go online look up battery charge caluclator that should give you an idea to how long

[Pirate88179]

I can get up to 3,000 amps when running it through the b-cap which is why I need to be careful as you mentioned.  The EER puts out a pretty consistent 19 mA's or so.  But, when running through the cap the spikes can charge it up pretty quickly (relatively speaking) so I will have to see if it can keep up...it may not.

It should make for a good experiment.

We will see.

Bill

[dasimpson]

you might find that the batterys pull the amount down the b-cap can store that the case with joule thief anyway