Hand-held microphone assembly

Details Hand-held microphone assembly Hand-held microphone assembly

1977-08-24

1979-01-23

Cooper, William C.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200157, 179167, H04M 104

Patent

active

041362659

ABSTRACT:
A hand-held microphone assembly for use with two-way communications equipment in which an electret-capacitor microphone is mounted in the upper surface of the barrel portion of a pistol-shaped casing. A push-to-talk trigger disposed at the end of the barrel actuates a double-pole, double-throw slide switch to couple the output of a local preamplifier in the casing to an audio output line leading from the casing and to make suitable couplings between three changeover lines. A resilient conductive strip disposed within the casing at the inner end of the slider element is actuated in response to the operation of the double-pole switch to couple the preamplifier to a normally disconnected amplifier power supply in the casing.

REFERENCES:
patent: 2533493 (1950-12-01), Mitchell
patent: 3065352 (1962-11-01), McFarlane
patent: 3564416 (1971-02-01), Price

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