Speaker switching device

Details Speaker switching device Speaker switching device

1989-04-24

1991-04-09

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Convertible

369 2, 381123, 307131, H04B 120

Patent

active

050071041

ABSTRACT:
A circuit electrically connecting a single pair of speakers to a radio speaker output of a radio and to a tape deck speaker output of a tape deck through relay contacts in a manner whereby in a first position of the contacts the radio speaker output is electrically connected to the speakers and the tape deck speaker output is disconnected from the speakers, and in a second position of the contacts the tape deck speaker output is electrically connected to the speakers and the radio speaker output is disconnected from the speakers. A relay energizing winding controls the positioning of the relay contacts. A current-sensitive switch is electrically connected to the relay energizing winding and to the tape deck power supply and is electrically connected to the radio power supply when the contact means is in its first position. The relay energizing winding is disconnected from the radio power supply and is energized by the tape deck power supply to move the relay contacts to their second position when a cartridge is inserted in the tape deck.

REFERENCES:
patent: 2866925 (1958-12-01), Wunderman
patent: 3201658 (1965-08-01), Reynolds
patent: 3646278 (1972-02-01), Panizzi
patent: 3952154 (1976-04-01), Gates, Jr.

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