Electrical load drive and control system

Details Electrical load drive and control system Electrical load drive and control system

1983-03-11

1985-03-12

Wong, Peter S.

Electricity: power supply or regulation systems

External or operator controlled

Using a three or more terminal semiconductive device as the...

307255, 307263, 307270, G05F 156, H03K 1700

Patent

active

045047790

ABSTRACT:
A circuit for varying the power supplied from a D.C. power supply to a moderate to high powered load such as a motor is disclosed. Trapezoidal voltage and current waveforms are used approaching the maximum load power delivery available from sine wave drives and the minimum dissipation in the driver circuitry available with square wave drives, while at the same time minimizing the generation of undesirable electromagnetic interference (EMI).

REFERENCES:
patent: 3444394 (1969-05-01), Colvson
patent: 3868517 (1975-02-01), Schoeff
patent: 3895238 (1975-07-01), Saari
patent: 4320521 (1982-03-01), Balakrishnan et al.
patent: 4325021 (1982-04-01), McMackin
E. Hebenstreit, "Driving the SIPMOS Field-Effect Transistor as a Fast Power Switch", Siemens Forsch u. Entwickl-Ber, Bd. 9 (1980), No. 4, (c) Springer-Verlag 1980, pp. 200-204.

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