hi

actually i have 6 push full wave fully controlled scr firing pulse circuits but its functionality depends on sync. supply.

my improvement task is "without sync. supply".

details:
sync. supply is use for pulse generation through "zero crossing and current controller output", then after IC 4538B is used for dual pulse generation .
for 6 scr's total 6 op-amp is used as zero crossing dect. circuit.
total 12 pulse generated for 6 scr.

one more point is ac power supply and circuit control supply match ( vector group) with small transformer(not power transformer, simple 3 transformer )


please reply.


thanks
Mukul

 

This is hard to understand. When you say:

my improvement task is "without sync. supply".

- does this mean you have an assignment to control the SCR's without reference to the zero crossing detectors?

Is this a circuit under control of a microprocessor? Can you furnish a block diagram of the desired circuit?