| 摘要 |
A circuit is disclosed in which the armature and the field winding of a DC motor are respectively connected in series with first and second silicon controlled rectifiers to which controlled pulses are applied to render the rectifiers alternately conducting with a toggling action. A capacitor is connected between terminals of the rectifiers to facilitate the toggling action and a free-wheeling diode is connected in parallel with the field winding to insure that field current is flowing at the same time that armature current is flowing.
|
