Arrangement for producing pulse-shaped signals

Details Arrangement for producing pulse-shaped signals Arrangement for producing pulse-shaped signals

1976-07-20

1978-04-04

Pitts, Harold I.

Communications: electrical

Digital comparator systems

307268, G11C 700

Patent

active

040830365

ABSTRACT:
An arrangement suitable for producing pulse-shaped signals whose amplitude is determined by a control voltage in an electronic musical instrument. The arrangement comprises a first transistor having a control electrode to which the control voltage is applied and a main electrode connected to a point of fixed potential via an impedance. The arrangement further comprises means for transferring the output current of the first transistor, which current is determined by the control voltage, to an output in a pulse-shaped fashion. In order to convert the unipolar current pulses into bipolar current pulses the arrangement includes a second transistor whose input circuit is connected in parallel with the input circuit of the first transistor. The output current of this second transistor is subtracted from the output current of the first transistor by means of a current amplifier, the result being available at the output.

REFERENCES:
patent: 3187260 (1965-06-01), Dove
patent: 3192401 (1965-06-01), Gray
patent: 3370238 (1968-02-01), Lampa
patent: 3538353 (1970-11-01), Hanger
patent: 3624610 (1971-11-01), Warring
patent: 3727188 (1973-04-01), Horsten
patent: 3805174 (1974-04-01), Schlatter
patent: 3825888 (1974-07-01), Kawagoe
patent: 3846645 (1974-11-01), Kim

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