Re: AW: Re: Aw: Re: AW: Re: AW: Re: AW: Re: Re: Re: AW: Re: AW: Re: Re: AW: Re: Re: AW: Re: Re: Re: AW: [EVGRAY] Re: All information about Diode Plug.

Body

Hi Sven,

"So I always understood that the resonance is not influenced by optimally adjusted system and takes no additional active power."
Correct. It's like a mechanical pendulum. It keeps on swinging when energy has been applied to it. If the energy isn't dissipated it doesn't stop swinging.

It looks like the SCRs trig after the peak voltage. This is because of the two RC filters between the big capacitor and the DIAC and gate of the SCRs. It also looks like sometimes the triggering doesn't happen but then is done at the next half cycle.

Without knowing what is being measured it's hard to tell exactly what happens. If measuring the gate-cathode signal and the voltage across the anode-cathode of the SCR this would make it be possible to see when the SCR fires. This would require differential probes or having the ground of the scope floating. If the top bus line is used as reference the left hand side SCR could be measured that way as well as the voltages across each capacitor to see if they both are discharged in each cycle. 


#1


#2


#3

Regards
Ole

 

---In [email protected], <s.friedrich@...> wrote :

 Hi Ole,

So I always understood that the resonance is not influenced by optimally adjusted system and takes no additional active power.

I again measured the main LC with switching and without switching the thyristors. I think he should voltage with the switch s.besten look exactly as without switching.

I tried to stop everything like that, but there is a point where the system collapses, maybe you have an idea why that is, I think there is an overlap here, but I'm not sure.

regards

Sven

https://youtu.be/BWObu6ZEDuc https://youtu.be/BWObu6ZEDuc