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  #1  
Old 05-02-2010, 12:27 PM
mukulkr82 mukulkr82 is offline
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Default scr firing circuits

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
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Old 05-02-2010, 01:19 PM
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beenthere beenthere is offline
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Default

This is hard to understand. When you say:
Quote:
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?
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