Re: DRSSTC - I think I heard Cross Conduction...

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Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>


Hi Sue
> Original poster: Sue Gaeta <sgsparky@xxxxxxxxxxx>
>
> and when I powered up again, The interrupter worked fine. That was
probably
> due to noise. When I put the 10K in series with the CT, I had absolutely
no
> problem at all. It's like too much feedback was overwhelming, and I seemed
> to remember seeing a huge spike when there was no resistor.
>
> Before I made improvements to my coil, I actually needed more feedback. I
> had to wire two of them in series parallel to get the coil to start. Then
> this slowly became too much as I made improvements. First I needed to cut
> back to one CT, and then later on I needed the 10K. If you change one
> parameter somewhere, expect something else to change somewhere else.
>

Initially it seemed crazy to suggest putting 10k in series with the o/p of
the CT.
If its a CT it requires a low impedance.
When I thought about it, if the output from the 10k going to a much lower
impedance then the voltage peaks will correspond to the zero current
crossings of the input and no zero crossing detection is required neat. Do I
have it correct? where is your circuit?

Robert