Re: [EVGRAY] Re: buck plug ...(peak detection)

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Hi Sven,
 
 Here is one of your schematics which will do for describing an idea for peak detection. I hope this message doesn't get truncated.
 
 The current through the freewheeling diodes can be monitored by measuring the sign of the voltage across them. By watching when the voltage (U_pos) across D3 is negative this tells that the current through D1 has stopped and the stored energy of inductor L1 is being 'discharged' or actually demagnetized. When the inductor L1 is fully demagnetized the U_pos voltage stops being negative and the capacitor C1 is fully charged. This is the time for discharging C1 by triggering the T1 SCR.
 
 A similar circuit is used for triggering the negative cycle. By doing it this way the triggering point will always happen when the charging current to the capacitors stop flowing.
 
 Regards
 Ole
 

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

 Hi Sven,

Here is one of your schematics which will do for describing an idea for peak detection. I hope this message doesn't get truncated.