Joule Thief replications - not overunity

[NewEnergyHope]

Yes, this circuit runs for quite a while without any batteries. The supercap needs to be charged first, but then a battery is no longer needed. (I still haven't gotten/tried a bigger supercap...)

I got tired of having to "ride" R1 during circuit operation to keep the LED blinking steadily so I added some "optical feedback" and the circuit now runs very nicely by itself (One must adjust R2 until stable operation is achieved.)

[bolt]

Flashing an LED for a long time is not really a useful practical device. Nor is it "cutting edge" technology. My smoke detector runs for about 2 years off a pp3 battery AND flashes the LED. When the battery gets low it flashes AND beeps for about 6 months! You put a lithium battery inside they last 10 years.

No OU here though of course just low power circuits. Back in the 90's i designed commercial app hardware to run processor, clock, 10mW transmitter circuit off 6 AA cells and it lasted 4 years. The average current consumption was a mere 265uA

This is not to say a Joule Thief or Stifler circuit can't go OU they can but be-careful you haven't just made a low power device and get over excited about it.

[WilbyInebriated]

This is not to say a Joule Thief or Stifler circuit can't go OU they can but be-careful you haven't just made a low power device and get over excited about it.

and how exactly does a simple blocking oscillator "go OU"?

[bolt]

Correctly working tuned toroidal cores go OU.  As the basis of Orbo, bob boyce, tpu, kapandze and hundred other things but it not the oscillator design  in case you are wondering.

[WilbyInebriated]

Correctly working tuned toroidal cores go OU.  As the basis of Orbo, bob boyce, tpu, kapandze and hundred other things but it not the oscillator design  in case you are wondering.

great! where can i see this measured and demonstrated? because the orbo doesn't show it, nor does boyce, and there are no working tpu replications even with the best and brightest (poynt, grumpy, etc.), in their own minds anyways, working on it. same with kapandze and the "hundred other things"...

p.s. stiffler's circuit doesn't have a  toroidal core... nor does kapandze's.