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Series Parallel Two Sensor Loop Alarm Circuit

2014-11-08 20:32  
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For the parallel loop configuration is used four switches connected in parallel and are used for monitoring . When one of the four switch is closed SCR1 triggers , which sound the alarm .Two  SCRs  are used with two sensor loops. One loop uses series switches, the other loop parallel switches. When a switch actuation occurs, the SCR triggers.The alarm should be a noninterrupting type.The function of the closed loop circuit alarm is same as parallel loop alarm , but in this case the alarm is activated when one of the switch ( that is connected in series at this alarm type ) is open .

Series Parallel Loop Alarm Circuit 



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