Monday, October 21, 2013
High Power Alarm Driver
In this circuit, a low-powered SCR is used to trigger a higher powered SCR. When a switch is opening (S2, S3, S4) or closing (S5, S6, S7), either SCR1 or SCR2 triggers. This triggers SCR3 via D1, D2, and R5. BZ1 is a high-powered alarm of the noninterrupting type.
High-Power Alarm Driver Circuit Diagram
High-Power Alarm Driver Circuit Diagram
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