Joule Thief

[kooler]

Hi folks, Hi pirate, thanks for the info. maybe i need to try a little thicker wire for the primary coils, will see. Hi kooler, thanks for your input, though i hooked up that other diode and still the same. Are you sure your led off the transistors collector is oriented as you show in the video, at any rate, I'm only getting half brightness. Also, you said your base resistance is at around 48kohms and mine has to be 150 ohms just light the led, any ideas what i may be doing different from your circuit. Thanks.
peace love light
Tyson

the diodes at the secondary aren't needed..
the way the ground is hooked up to the secondary is important..
plus the transistor your using the 2n2222.. i never had any luck with them.. or the 2n3904..
i can get the tip31c to perform better than a 2222..
but i .like the mpsa06 it tough..haha
my won't run this low without the cap across the pot or resistor..
good luck

robbie

[guruji]

Thanks Kooler for response. I think still I would stick to the other DC circuits then cause it seems they're more efficient in consumption especially yours.
Thanks

[freepow]

  Hello,  Can someone help me with this Light dependent resistor circuit.
              Not sure if these circuits are connected the correct way ?
   
             Its a moonlight night and the volts coming through the LDS is say  0.12v
             In very overcast day the volts coming through the LDS will be say 1.2v
             Lets say its a moonlight night at the present !

             
             Left Circuit needs at least 0.7v for transistor to turn on and start charging the 55F Cap,
             but there is only  0.12v coming through which means the Cap is not charging, but soon as
             the very overcast day comes the volts coming through will be 1.2v, which means the
             transistor will turn on and start charging the Cap, correct ??

             Right Circuit has  0.12v coming through, which means that very low voltage of  0.12v
             will be leaking out of the battery and charging the Cap with just  0.12v, but if instead
             of the Cap we put a LED in its place, would the  0.12v still get used out of battery or
             would it not because the LED needs more than  0.12v to light up ??

             

[nievesoliveras]

Hello,  Can someone help me with this Light dependent resistor circuit.
              Not sure if these circuits are connected the correct way ?
   
             Its a moonlight night and the volts coming through the LDS is say  0.12v
             In very overcast day the volts coming through the LDS will be say 1.2v
             Lets say its a moonlight night at the present !

             
             Left Circuit needs at least 0.7v for transistor to turn on and start charging the 55F Cap,
             but there is only  0.12v coming through which means the Cap is not charging, but soon as
             the very overcast day comes the volts coming through will be 1.2v, which means the
             transistor will turn on and start charging the Cap, correct ??

             Right Circuit has  0.12v coming through, which means that very low voltage of  0.12v
             will be leaking out of the battery and charging the Cap with just  0.12v, but if instead
             of the Cap we put a LED in its place, would the  0.12v still get used out of battery or
             would it not because the LED needs more than  0.12v to light up ??

           

The light dependent switch will not allow current to pass if there is not enough light to help it to get to its working point. So changing the cap for a Led will not help much if any.

[kooler]

freepow

have you tried this to see if it works