Control circuit

Details Control circuit Control circuit

1962-03-22

1982-03-16

Farley, Richard A.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

H02M 7515

Patent

active

043204490

ABSTRACT:
1. A direct current to alternating current conversion apparatus comprising, a plurality of controlled rectifiers each having a conducting and a non-conducting state, each of said controlled rectifiers having an anode-cathode circuit and a triggering electrode, first means for changing a direct current to a first frequency alternating current, said state of conduction of each of said plurality of controlled rectifiers being determined by a control circuit comprising a phase shifting network connected with and responsive to said first frequency alternating current from said first means, said first frequency alternating current connected with said anode-cathode circuits of said plurality of controlled rectifiers, second means connected to said phase shifting circuit modulating said phase shifted first frequency alternating current at a second frequency alternating current, said modulated first frequency alternating current connected to said plurality of controlled rectifier trigger electrodes so that said controlled rectifiers are rendered conductive in a predetermined sequence to provide an output voltage at said second frequency alternating current.

REFERENCES:
patent: 2442261 (1948-05-01), Boyer et al.

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