
Introduction and General Information
ADDvantage-32 PLUS ● AC to DC Power Converter
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1.2.4 BRIDGE INTERFACE BOARD
The BRIDGE INTERFACE BOARD (Figure 1-6) is an interface between the
microprocessor board and the high power thyristor circuits. The main functional circuits
on this board are as follows:
• Current Feedback Scaling and Isolation
• SCR (thyristor) Firing Circuitry and Isolation
• Power Supplies for all the Drive Boards
• ESTOP and Drive OK Relays
• SCR Heat Sink Temperature Feedback Circuitry
• Gate Power Relay
• Voltage Feedback Scaling and Isolation
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