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Old 05-02-2010, 12:27 PM
mukulkr82 mukulkr82 is offline
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Join Date: May 2010
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Default scr firing circuits


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".

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.

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Old 05-02-2010, 01:19 PM
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beenthere beenthere is offline
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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?
First comes the hardware, then the software.
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