Patent ID: 6630753
Filing Date: 2003-10-07
Classification: H02J

Abstract:
A circuit, comprising:a first opto-coupler coupled to a first voltage source; a first set-reset latch coupled to the first opto-coupler; a first resistor coupled to the first opto-coupler and the first set-reset latch; a first silicon controller rectifier (SCR) coupled to the first set-reset latch, the first resistor, the first voltage source, and a load; a first diode coupled to the first voltage source, the first opto-coupler, and the load; a second opto-coupler coupled to a second voltage source and across the first resistor; a second set-reset latch coupled to the second opto-coupler; a second resistor coupled to the second opto-coupler, the second set-reset latch, and the second voltage source, wherein the first opto-coupler is coupled across the second resistor; a second SCR coupled to the second set-reset latch, the second resistor, the second voltage source, and the load; and a second diode coupled to the second voltage source, the second opto-coupler, and the load.