Lasersaber strikes again. A joule thief king ?

[totoalas]

Here are Laserhackers drawings.

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

https://www.youtube.com/watch?v=HpRBMd0mfIE
another use of bridge rectifier

[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]

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.

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.