Hazardous area alarm circuit diagram 1

Published:2011/6/2 3:44:00 Author:Lucas | Keyword: Hazardous area , alarm | From:SeekIC

The voltage-stabilizing circuit is composed of three-terminal voltage regulator integrated circuit IC2, resistor R3, zener diode VS and filter capacitors C1, C2. Pyroelectric infrared detecting trigger circuit is composed of the pyroelectric infrared detection module IC1, transistors V1, V2, resistors R1, R2 and potentiometer RP. Electronic switch circuit consists of the electronic switch IC IC5, resistors R9, R10 and capacitor C8. Audio power amplifier consists of the power amplifier integrated circuit IC4, resistors R6 ~ R8, capacitors C4 ~ C7 and speaker BL. Low-frequency oscillator circuit consists of the time-base integrated circuit IC6, resistors R11, R12 and capacitors C9, C10 and other components.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Alarm_Control/Hazardous_area_alarm_circuit_diagram_1.html

Print this Page | Comments | Reading(3)