Electric power conversion systems – Current conversion – With means to selectively provide d.c. of either polarity
Patent
1985-05-02
1987-03-17
Salce, Patrick R.
Electric power conversion systems
Current conversion
With means to selectively provide d.c. of either polarity
363 56, 363132, 318599, H02M 702
Patent
active
046512691
ABSTRACT:
There is disclosed a circuit for reversing an electric current flow comprising a motor, a circuit formed of a first transistor at a power source V.sub.CC side and a third transistor at the ground side which are connected in series, a circuit formed of a second transistor at the power source V.sub.CC side and a fourth transistor at the ground side which are connected in series, the junction of the first and third transistors being connected to one terminal of the motor and the junction of the second and fourth transistors being connected to the other terminal of the motor, and a pulse generator for producing an output signal which delays the turn-on timing of the third or fourth transistor until the state of the first or second transistor has been changed from an on-state to an off-state.
REFERENCES:
patent: 3579080 (1971-05-01), Vollrath
patent: 4409527 (1983-10-01), Sommeria
Hoff Marc S.
Kabushiki Kaisha Toshiba
Salce Patrick R.
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