Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1997-04-08
1999-08-17
Kinkead, Arnold
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315219, 327291, 327589, 363 24, 363134, H05B 3702
Patent
active
059398345
ABSTRACT:
A power supply circuit for powering a load circuit comprises a load circuit and includes a converter circuit for inducing current in the load circuit. The converter circuit comprises first and second converter switches serially connected in the foregoing order between a bus conductor at a d.c. voltage and a reference conductor, and connected together at a common node through which the load current flows. The first and second converter switches each comprise respective interconnected control nodes and references connected together at the common node. The voltage between a control node and associated reference node determines the conduction state of the associated switch. A first node is coupled to the bus conductor, and a second node is coupled to the reference conductor. A bridge network is connected between the first and second nodes and has first and second input nodes on which respective first and second input signals are applied. First and second output nodes are respectively connected to the common and control nodes to control the switching state of the converter switches. The first and second pairs of gate control switches are arranged to cause repetitive cycling through at least the following states of the first and second converter switches being respectively: on and off, turned off and already off, off and on, already off and turned off.
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Bruzga, Esq. Charles E.
General Electric Company
Kinkead Arnold
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