Electronic siren

Details Electronic siren Electronic siren

1980-07-10

1982-12-07

Curtis, Marshall M.

Communications: electrical

Audible indication

Ultrasonic pest control

340384R, G08B 300

Patent

active

043630286

ABSTRACT:
An electronic siren-public address system with remote control capability. The siren-public address system employs a push-pull power amplifier wherein the output transistors are driven into saturation in the siren mode to minimize power dissipation in the power amplifier.

REFERENCES:
patent: 4075624 (1978-02-01), Sheff

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