Voltage-controlled phase shifter circuit for an electronic music

Details Voltage-controlled phase shifter circuit for an electronic music Voltage-controlled phase shifter circuit for an electronic music

1977-04-05

1978-10-24

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328202, 331108B, 84 126, H03K 112, G10H 504

Patent

active

041223640

ABSTRACT:
A phase shifter circuit in electronic musical instruments, in which sound effects are generated by varying the amount of phase shift through voltage control. The amount of a shift may be linearly varied by an external voltage, and the operating point of the phase modulation can be freely set over a substantially wide range. The amount of phase shift, furthermore, may be made large so that a circuit stage having a pair of transistors is designated as a unit, and several such units are cascode-connected. Adjustment of this unit is not required.

REFERENCES:
patent: 3688010 (1972-08-01), Freeman
patent: 3852624 (1974-12-01), Marik et al.
patent: 3854367 (1974-12-01), Ryon
patent: 3983512 (1976-09-01), Lipscombe

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