Circuit for controlling the speed of a motor
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United States of America Patent
Stats
-
Nov 22, 1983
Grant Date -
N/A
app pub date -
Nov 23, 1981
filing date -
Dec 24, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit is disclosed for controlling the speed of a motor having a constant magnetic field and supplied from an alternating current line source through a controllable semiconductor rectifier which utilizes a pair of series connected electronic switches each followed by storage capacitors. The switches are operated in phase opposition by the line frequency and followed by the input of a controller whose output is connected to a firing stage for firing the semiconductor rectifier.
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