Electric power conversion systems – Current conversion – With means to selectively provide d.c. of either polarity
Patent
1982-11-04
1984-10-02
Shoop, William M.
Electric power conversion systems
Current conversion
With means to selectively provide d.c. of either polarity
318696, H02M 702
Patent
active
044751516
ABSTRACT:
A switching current supply circuit, in response to a control voltage, controls the current flowing in an inductive load. Included is a pair of terminals adapted for connection to such a load and a bridge network connected to the terminals for producing a voltage indicative of the current flowing through the load. A comparator switches an output voltage between two distinct values in response to a differential input voltage having components derived, at least in part from the control voltage and the load-current-indicating voltage. Finally, a polarity-changeable voltage source, in response to the output voltage, applies, selectively and reversibly, known voltages of opposite polarity through the bridge network to the load-connectable terminals. These known voltages effect a change in load current level appropriate to decrease the absolute value of the above-mentioned input voltage. Optionally, this circuit also includes an adjustable hysteresis circuit connected to the comparator for delaying switching therein by a known period of time. The circuit may also be constructed to minimize common mode voltage.
REFERENCES:
patent: 1960350 (1934-05-01), Shackleton et al.
patent: 2443347 (1948-06-01), Field
patent: 2914717 (1959-11-01), Redding
patent: 3210626 (1969-10-01), Wierzbicki
patent: 3418560 (1968-12-01), Petersen
patent: 3560821 (1971-02-01), Beling
patent: 3684945 (1972-08-01), Hermansson et al.
patent: 3752189 (1973-08-01), Marr et al.
patent: 4087732 (1978-05-01), Pritchard
patent: 4100471 (1978-07-01), Pritchard
LandOfFree
Switching amplifier circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching amplifier circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching amplifier circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-529008