Solid States Devices > Joule Thief

Lasersaber strikes again. A joule thief king ?

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totoalas:

--- Quote from: hartiberlin on May 02, 2014, 04:41:58 AM ---Here are Laserhackers drawings.

The rectifier brdige is really genuine connected to this circuit, pretty unlogical,
but wow, it seems to work so good...

--- End quote ---
https://www.youtube.com/watch?v=HpRBMd0mfIE
another use of bridge rectifier 8)

Pirate88179:
Lasersaber is the Joule Thief King.....for now anyway.  He has done some excellent work and has shared information on how to replicate.  I am convinced that the old JT circuit is not done showing us everything that it can do.  I take my hat off to Lasersaber for all of the work he has done with this circuit, and its variations.

Bill

Groundloop:
Hi,

This is my version of the Lasersaber SJR circuit.

GL.

forest:
Better use N-Channel mosfet to prevent bad polarity connection. Voltage drop would be insignificant, but the cost of such mosfet will probably be too much for simpler circuits.

MarkE:

--- Quote from: forest on May 04, 2014, 11:12:07 AM ---Better use N-Channel mosfet to prevent bad polarity connection. Voltage drop would be insignificant, but the cost of such mosfet will probably be too much for simpler circuits.

--- End quote ---
If the goal is to get really low voltage operation then a JFET or depletion mode MOSFET will do.  For operation in the 1V range there are lots of logic level gate threshold enhancement MOSFETs and lots of BJTs that will do.

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