Electric equipment driving circuit

Details Electric equipment driving circuit Electric equipment driving circuit

1986-12-04

1987-11-10

Shoop, Jr., William M.

Electricity: motive power systems

Supplied or controlled by space-transmitted electromagnetic...

367198, 446454, A63H 3004

Patent

active

047059940

ABSTRACT:
A microphone senses a sound generated by the user clapping his hands and converts the sound into an electric signal which is applied to a flip-flop circuit to set the latter. The output of the flip-flop circuit is supplied through a time constant circuit to a drive and control circuit for operating a sound generating device having a reproducing stylus and a recorded disk. A reset signal producing circuit is provided to produce a reset signal for the flip-flop circuit when a second sound is sensed by the microphone within a predetermined time period set by the time constant circuit, thereby stopping the operation of the sound generating device.

REFERENCES:
patent: 3892920 (1975-07-01), Kolm
patent: 4317189 (1982-02-01), Fukuoka

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