Kapanadze Cousin - DALLY FREE ENERGY

[d3x0r]

I have start working today on the second oscillator (TL494). From my measurements the frequency can be varied from 6Khz up to 210KHz.

Duty cycle can be varied from 40-60 until the oscillations are gone. I think the 10K resistor connected between terminal 2 of TL494 and the 22k variable resistor it's to small. Seems more like 15k to me to be the correct value, but for the first stage of the replications I will live it like Dally.

Can somebody confirm?

Mihai

That is approximatly what Itsu and I have... For operation I think you will be on the upper side of the frequency and the lower side of duty cycle.

[verpies]

I have start working today on the second oscillator (TL494).
From my measurements the frequency can be varied from 6Khz up to 210KHz.

By adjusting P1 at pin 6 of U1 ?

[Black_Bird]

@itsu

I was referring to the output transformer for the pulse, in the drain of the MOSFET. But as verpies said, you are still not using it.

[verpies]

Duty cycle can be varied from 40-60 until the oscillations are gone. I think the 10K resistor connected between terminal 2 of TL494 and the 22k variable resistor it's to small.

The duty cycle on the TL494 can be varied from 3% to 97% by the error amplifiers and P2, it just has to be connected differently.
Like this:

[mihai.isteniuc]

By adjusting P1 at pin 6 of U1 ?

Yes Verpies. That is correct.

The convertor it's done. I have to make a few refinements and find a suitable transformer to drive it. Best effort right now it's 50V on one of the secondary. I'll get back to you when it will be really completely finish with details.

Any other details you or somebody else need please post them. I'll be more then happy to answer.

Mihai