The sound and light alarm circuit diagram 1 for industrial instrumentation

Published:2011/6/9 4:40:00 Author:Lucas | Keyword: sound , light, alarm, industrial instrumentation | From:SeekIC

The sound and light alarm circuit for industrial instrumentation is composed of the detection control circuit, bistable trigger, LED flash circuit, sound alarm circuit and +12 V voltage regulator circuit, and the circuit is shown as the chart. Detection control circuit is composed of controlled contact of industrial instrument (controlled electric contact) Kx, resistors R1, R2, zener diode VS3 and capacitors C1. LED flash circuit consists of the D3, D4 which are inside of NAND gate integrated circuit IC (D1 ~ D4), resistors R6 ~ R8, R10, capacitor C3, transistor V and LED VL. Sound the alarm circuit is composed of resistor R5, field-effect transistor VF and alarm HA. R1 ~ R8 select l/4W metal film resistors.



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