Clock control timing start-up obfuscation guard against theft acousto-optic control circuit

Published:2011/4/29 4:34:00 Author:Nicole | Keyword: clock control, guard against theft, acousto-optic control | From:SeekIC

The circuit is as shown. It is composed of clock control timing circuit, SCR control circuit, voice phonation circuit, audio power amplifier circuit and AC depressurization rectifier circuit. This circuit is used for relics exhibition hall, temple, mosque and those occasionsoccasions when nobody is on guard during night. Before the watch keeper leaving,they shouldpreset the clock control time, such as 2:00 am. When it is the preset time, the circuit will light up the indoor lights automatically, and send out noice, to create a false impression that there is someone on duty, then to puzzle the prowler, so that the perpetrator will not rush prematurely.



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

Print this Page | Comments | Reading(3)