POWER SUPPLY CIRCUIT

PROBLEM TO BE SOLVED: To supply always stabilized voltage to a load by supplying higher voltage out of a regulator output and a voltage harbor output to a load circuit. SOLUTION: A regulator circuit 1 outputs previously set stepdown voltage V1 and a voltage harbor circuit 2 outputs stepdown voltage...

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Bibliographische Detailangaben
1. Verfasser:	ARITA MITSUKI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONTROLLING CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To supply always stabilized voltage to a load by supplying higher voltage out of a regulator output and a voltage harbor output to a load circuit. SOLUTION: A regulator circuit 1 outputs previously set stepdown voltage V1 and a voltage harbor circuit 2 outputs stepdown voltage V2 corresponding to about a half of the voltage of a main power supply VDD1. When V1>V2, a control signal D1 to be an output from a comparator 3 is turned to a low level. The control signal D1 is connected to the gate control of a switch SW2 and its inverse signal C1 is connected to the gate control of a switch SW1. A higher voltage output out of the output V1 of the circuit 1 and the output V2 of the circuit 2 is always selected and supplied to the load circuit 4 as an output V3. Each of the switch circuits SW1, SW2 is turned to a conductive state when its gate control voltage is a low level.