PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[nul-points]

Steven

i wanted to thank you for raising our interest in your oscillator circuit and its associated investigations

i have to admit, when i saw your thread start i didn't follow it up at first because i thought the subject would have been exhausted in the various JT threads already in existence (not that i have anything against them!)

however, i'm hooked!

even in this seemingly simple circuit, all sorts of basic issues have been raised; it's certainly been a worthy test-vehicle so far - and we've only just got out onto the freeway 


what prompted me to write this now, is that i've been doing some of my own experiments since the end of last year, with DIY cells using thin sheet & foils of dissimilar metals & unusual hydrocarbon-rich 'electrolytes'
(as noted at my blog linked below)

i'm attempting to achieve a self-sustaining combination of cell & LED flasher circuit (ie. the system will need to obtain energy from the ambient environment)

i appear to have succeeded with one combination which has maintained an average 2 cell voltage of 1.2V since the beginning of March (all other attempts have discharged the cells within a couple of months)

although my existing LED flasher circuit is very low-powered (approx 1uW), it can only continue flashing the LED down to around 1V supply, which means that i need 2 cells in series as a supply battery

however, as a result of my experiments with low-powered variants of your SJ1 circuit, i have now been able to produce an LED flasher which is operating down to around 0.4V, flash rate approx 1 per 20 seconds - so i can now power an LED flasher load circuit using only 1 cell - and reduce the component count down from 12 parts to 7!

i've altered the base capacitor and diode values to achieve a slow flash, and i've connected a piezo sounder across the base capacitor to generate a 'click' with each flash

i've just run a capacitor-only test with that variant and i was able to generate 42 flashes from a 100uF capacitor charged to 0.8V (taking approx 10 minutes)

using only 0.8V as supply, this circuit can develop a pulse of approx 64V across the supply inductor (whilst on-load to the LED flasher) and it has actually increased the terminal voltage of one of my DIY cells back up to 0.81V, the original o/c voltage i measured when the cell was created

as you can imagine i'm very impressed with this deceptively 'simple' circuit and i look forward to seeing what else we can learn from our investigations

thanks again
np


http://docsfreelunch.blogspot.com

[NickZ]

  @ Joule Seeker:
   Here is the link that you requested. 
   http://www.youtube.com/watch?v=JIIhgHTEoM0&feature=related
   
   Dr. Stiffler has mentioned that the device can also light two white leds, and not just the one red one shown in the video.  I stumbled upon this video the other day, as it caught my attention.
  He uses an antenna wire and a ground connection, but no transistor, pot, or resistor.  It's different than any other device out there, like most of his projects.  Great find...

   

[xee2]

@ nul-points

Getting a silicon transistor to work from 0.4 volts is a good accomplishment. Congratulations.

[nul-points]

 

@ nul-points

Getting a silicon transistor to work from 0.4 volts is a good accomplishment. Congratulations.

thanks, but i think the congrats are due to Steven for bringing this type of oscillator to our attention! 

[Pirate88179]

  @ Joule Seeker:
   Here is the link that you requested. 
   http://www.youtube.com/watch?v=JIIhgHTEoM0&feature=related
   
   Dr. Stiffler has mentioned that the device can also light two white leds, and not just the one red one shown in the video.  I stumbled upon this video the other day, as it caught my attention.
  He uses an antenna wire and a ground connection, but no transistor, pot, or resistor.  It's different than any other device out there, like most of his projects.  Great find...

Wow!  Dr. Stiffler has done it again.  That is really amazing to me.  It would be very interesting to see if this could be scaled up a bit.

Bill