Regeneration and the Toroidal Power Unit

[turbo]

okay, thanks will do.
i have some of the o'l am reciever ferite rod antennas 
I will try that first.

Marco

*i got experiment fever again

[CTG Labs]

Ok everyone, I just got in from work and rigged this up quickly.

Firstly I could not get the bulb to light.  But secondly if we look at the bulb signal we can see 70v spikes across a cold fillament of 373 ohms.

The input current using a Fluke 189 is around 180mA@12v.

However, if instead we insert a 1ohm resistor in series with the battery and use the scope with one channel across the battery and the other across this shunt, we get a whole other story on the current drawn....


D.

[dutchy1966]

Dave,

Hi, thanx for testing this.
Does it look like your oscillator is running really slow? I see spikes at around every 250 us?
Have you worked out the current drawn according to the shunt measurements?

Robert

btw Is this EM's midified circuit with the pnp?

[CTG Labs]

Hi Rob,

The oscillator runs around 4Khz.  I used the same PNP circuit as EM except I used a coil I already had from another blocking oscillator.

I have not worked out the current using a full integration, but we can see 30 amp peak surges so I dont see any point in going further, it says it all.


D.

[dutchy1966]

Yep, I see it now the surges convert to just under 1 amp (20-30 surges would fit one division). Well this can be shelved too.... as i said before it seemed too simple to be true....

Robert