cop > 1

[Inquorate]

here's the 555 and opto circuit i used;

youtube.com/watch?&gl=AU&warned=True&client=mv-google&hl=en-GB&v=txJaQPHfKqA&nomobile=1

Pulse width is separately controlled to the off time. That way, the pulse width can be chosen to get the inductor to max magnetic field and no longer, then the pulse is cut and the spike harvested.

The off time can be extended or shortened; not enough 'off' time, and the charge battery will boil. Too much off time and the ions in the charge battery will come to rest before the next pulse, and we lose gain.

One second of pulses and rest and another second of pulses and rest etc may also work well, getting the best of the battery's ions' inertia, as well as avoiding damage to the battery by cutting off before things start to boil.

I want to do these tests but cannot just now as I have a month old infant who's taking up my time atm. But I'll try to help.

[Groundloop]

@Inquorate,

Thanks for taking time to answer my posts. Congratulations with your newborn.
I did check the youtube video and, yes, the circuit uses a H11D1 opto and a 180 Ohm resistor.
I will soon build the 555 and opto circuit and give it a try.

Thanks,
Groundloop.

[Inquorate]

thannks for posting the image groundloop, i should mention for others that the pin 6 and pin 2 are connected, hence the dots. I forgot to include that line when i drew it the first time.

[Groundloop]

@Inquorate,

I'm making a cleaned up version of your drawing.

What are the value of the two potmeters?
Also, what is the value of the capacitor at the 555 IC pin 2?

Groundloop.

[Inquorate]

@Inquorate,

I'm making a cleaned up version of your drawing.

What are the value of the two potmeters?
Also, what is the value of the capacitor at the 555 IC pin 2?

Groundloop.

from memory, the duty cycle pot was 5k, the 'off time' pot was 10k, and the cap was 0.1uF? I'll confirm for you tomorrow but if i go into the lab again tonight i'll be a single parent or a eunich or something..