PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[NickZ]

  @ Xee2:
   How long will your 1.3 volt source battery last on your latest circuit before the led dies.?

[xee2]

  @ Xee2:
   How long will your 1.3 volt source battery last on your latest circuit before the led dies.?

The battery in the video is rechargeable, they go dead in about 6 months even if not used. With an alkaline battery the LED should stay lit for more than 5 years. But it is very dim, not very useful.

[JouleSeeker]

Thanks for the vid, Xee2.

@Nick --

"My BwJt are still discharging the AA battery in two days. "

The test you requested is still going on the little sj1 circuit -- I'll keep it going for two full days.
We are at 44 hours now and the AA battery has dropped from 1.623V to 1.618V.  I think the cap/time method is more useful.

I have done further tests with Xee's circuit.  My best results came with the following changes:
Replaced green LED with red, e-Goldmine #G13713  - see attached
   (5 for a buck; available; could be used as a standard perhaps)

Two 10 nF caps in parallel, connected to the MPSA06 base
   (this lowers the frequency to about 24 Hz, visible flicker seen)

The red LED does not go "out" at the transition voltage to lower Pinput, as the green LED does, but it does go very dim to quite bright at 1.57V, and thereafter the power consumption is small.

LED in series with a 21-ohm resistor.

Pinput measured by the cap/time method, using a 10mF cap for Ein:
1.320 volts to 1.240 volts in 187 seconds => 5.4 uW.

Summer solstice, 8 minutes ago!    Beautiful sunny day here.

[xee2]

The green LED I used is from Anchor Electronics (408-727-3693), min order $25 plus shipping.

[xee2]

@ JouleSeeker

I think your circuit has a problem. I replaced the green LED with a 10mm white high power LED and my circuit still draws 4.0 uA.