Re: Aw: [EVGRAY] Attachments out of order

Body

Hi Ole,

I have read this message at evgray and have not received any email. It is complicated here.

Hector has a nice way to explain it complicated.

Ok 1/240 second is half a half-wave at 60Hz.

If we look at 1 Hertz this is a circle and we have 1/4 time to load the diode plug and 1/4 time to discharge it.

This applies in each case to the positive half-wave and the negative half-wave.

At 50Hz everything is slower luckily.

We are talking about 1/200 second for the discharge and 1/200 second for the charge of the diode plug.

That means I have 5 milli seconds to load and 5 milli seconds to discharge it would be better in 4 milli seconds.

So I was loading and unloading properly every cycle. OK.

I would like to force the thyristors to switch off earlier.

If you could not install a class B commutation because I would switch an inductance anyway, you could switch a capacitor parallel to the cathode and the inductor. So that one triggers only a short pulse but then should be huge.

regards

Sven