Joule Thief

[NickZ]

 And, I just saw this solar system including an AA for $35 with 150 led, and they last 8 hours.  One a single AA. 
   Bill:  What do you say?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=350477985505+&clk_rvr_id=249977309602

   I think they must be listening in on our forum, but they waist no time.

[Pirate88179]

And, I just saw this solar system including an AA for $35 with 150 led, and they last 8 hours.  One a single AA. 
   Bill:  What do you say?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=350477985505+&clk_rvr_id=249977309602

   I think they must be listening in on our forum, but they waist no time.

Wow, I think you are right, they are watching us over here, ha ha.  They say it runs for 8 hours too but usually, those rechargable AA's that come with the solar lights, like the yard lights, are small capacity.  I have replaced most of mine with 2900 mAh batts which really extends the lighting time.  The same is probably possible with these as well.  I wonder what their JT circuit looks like?  These might be some small solid state device that we could use to light some lights of America led bulbs very brightly for a long time.

I wonder if their circuit is just a take-off of the Fuji?

Bill

[NickZ]

   The main thing is although they're flimsy,  but they'll work for a while.  They are like disposable Solar Christmas Lights, but it's the idea, and efficiency that counts.  I'll bet they only really get an hour or two at most, and not the 8 hours as stated, but that's a start.  If they use a coil or not would be interesting to know.  So, a few years behind us, but, there it is...

[WilbyInebriated]

this is probably in the wrong spot topic wise, but i put it here because here is where the do'ers are... in the past i have used the 'em noise soup' that surrounds us all to bias/power circuits. has anyone else here played with using one of these?

[xee2]

this is probably in the wrong spot topic wise, but i put it here because here is where the do'ers are... in the past i have used the 'em noise soup' that surrounds us all to bias/power circuits. has anyone else here played with using one of these?

Not me. But it looks interesting. What is it? I am looking at ambient energy receivers now (without any good results). Perhaps you could start a thread and post your results.