Switching circuit

Details Switching circuit Switching circuit

1974-02-27

1976-01-20

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307202, 307254, H03K 1700

Patent

active

039341585

ABSTRACT:
An improved switching means is provided in a loudspeaker system, which includes a power amplifier of direct coupled type having no output condensor to deliver an audio-frequency current to the loudspeaker, to eliminate undesirable effects by rapidly breaking an electrical connection between the power amplifier and the loudspeaker upon cutting off an a.c. power source. The switching means comprises circuitry having a remarkably short "time constant" compared with another circuitry provided outside the switching means but within the loudspeaker system, so that the above-mentioned rapid breaking is accomplished.

REFERENCES:
patent: 3551746 (1970-12-01), Rubner
patent: 3564338 (1971-02-01), Toshihiko et al.
patent: 3731153 (1973-05-01), Nishimoto
patent: 3835412 (1974-09-01), Honda et al.

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