Chopper control device

Details Chopper control device Chopper control device

1976-11-15

1978-08-15

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363135, H02M 7515

Patent

active

041077725

ABSTRACT:
A chopper control device is disclosed, comprising: a series circuit having a dc power source, a dc load, and a thyristor; a transistor connected in parallel to the thyristor; a current transformer having a primary winding for detecting the load current; and another transistor for deriving a current from a secondary winding of the current transformer and supplying it to the base of the transistor.

REFERENCES:
patent: 3461377 (1969-08-01), Reese
patent: 3551744 (1970-12-01), Keller et al.
patent: 3697851 (1972-10-01), Mast
patent: 3732006 (1973-05-01), Howard
patent: 3745377 (1973-07-01), Johnson
patent: 3793538 (1974-02-01), Rogers

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