Amplification circuit for electronic tone generator

Details Amplification circuit for electronic tone generator Amplification circuit for electronic tone generator

1987-06-15

1989-01-10

Grimley, Arthur T.

Music

Instruments

84 113, G10H 102, G10H 1057

Patent

active

047965037

ABSTRACT:
A shaped waveform tone generator circuit is contained entirely in an integrated circuit and has a pair of push-pull amplifiers for driving a piezo-buzzer. The output from an RC network controls current flow in a first follower transistor connected to one voltage source and in a second follower transistor connected to a second voltage source. A pair of CMOS switches alternately connect the inputs of the amplifiers to the first and second transistors. A tone signal controls operation of the two CMOS switches.

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patent: 4567806 (1986-02-01), Kodaira

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