Circuit for piloting an inductive load, particularly for control

Details Circuit for piloting an inductive load, particularly for control Circuit for piloting an inductive load, particularly for control

1989-10-25

1990-08-21

Beha, Jr., William H.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

123490, 307 41, 361191, F02M 5100

Patent

active

049509748

ABSTRACT:
A circuit for piloting an inductive load comprises a low-voltage supply, a storage inductor interposed between one pole of the supply and the load, a first electronic switch in parallel with the load, a second electronic switch in series with the load, between the load and the other pole of the supply, a third electronic switch interposed between the first pole of the supply and the junction between the load and the second switch, and an electronic control unit arranged to pilot the switches in a predetermined manner.
The storage inductor is permanently connected to the first pole of the voltage supply and a conductive bypass path is provided between the first pole of the supply and the load. The control unit is arranged to cause the second and third electronic switches to open and close successively in counterphase, in order to maintain the current in the load at a predetermined average level.

REFERENCES:
patent: 4618908 (1986-10-01), Anttila
patent: 4862866 (1989-09-01), Calfus

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