crazy "backwards" electronics...
UPDATE: I measured the resistance on my variable pot for this sweet spot and found it to be 100K ohms. I've tried other voltages to drive the oscillator and can get similar POSITIVE feedback results. DC output can charge batteries. Source battery charges too. I appear to have hit something interesting here. Others should try this... to confirm these results.
As source battery I used "dead" rechargeable 9v battery. As charge
battery on DC side of AC/DC converter I used 12v led acid.
Both batteries appear to be charging and the 2N3055 is getting
hot hot. This is crazy "backwards" electronics.
In this situation, there are two frequencies ... a slow frequency
PULSING square-wave with a high-frequency reverse-damped
oscillation inside. As source battery charges ... the oscillations
continue longer in the on pulse which is increasing in frequency.
I had D cell as source battery ... and "dead" AA as charge battery ...
D cell maintains, dropping in voltage very very slowly ... AA battery
charges.
This is really fun. I hope others can reproduce this.
UPDATE: I measured the resistance on my variable pot for this sweet spot and found it to be 100K ohms. I've tried other voltages to drive the oscillator and can get similar POSITIVE feedback results. DC output can charge batteries. Source battery charges too. I appear to have hit something interesting here. Others should try this... to confirm these results.
As source battery I used "dead" rechargeable 9v battery. As charge
battery on DC side of AC/DC converter I used 12v led acid.
Both batteries appear to be charging and the 2N3055 is getting
hot hot. This is crazy "backwards" electronics.
In this situation, there are two frequencies ... a slow frequency
PULSING square-wave with a high-frequency reverse-damped
oscillation inside. As source battery charges ... the oscillations
continue longer in the on pulse which is increasing in frequency.
I had D cell as source battery ... and "dead" AA as charge battery ...
D cell maintains, dropping in voltage very very slowly ... AA battery
charges.
This is really fun. I hope others can reproduce this.
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