SWITCH CONTROL CIRCUIT, SEMICONDUCTOR DEVICE, AND RADIO COMMUNICATION EQUIPMENT

PROBLEM TO BE SOLVED: To promptly set an output potential of a negative potential generation circuit to a desired potential without increasing power consumption.SOLUTION: A negative potential output line control circuit 9 in a switch control circuit 3 includes: an initial power supply setting circui...

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Bibliographische Detailangaben
1. Verfasser:	SESHIMO TOSHIKI
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 BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERATION PULSE TECHNIQUE TELEPHONIC COMMUNICATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To promptly set an output potential of a negative potential generation circuit to a desired potential without increasing power consumption.SOLUTION: A negative potential output line control circuit 9 in a switch control circuit 3 includes: an initial power supply setting circuit 41 that outputs a signal becoming a high level after a lapse of a predetermined period since a power supply potential has started up; an inverter 42 that inverts an output signal of the initial power supply setting circuit; a first capacitor C7 that is connected between an output terminal of the inverter and a negative potential output line; and a negative potential initialization circuit 43 that is connected between the negative potential output line and a ground terminal and sets the negative potential output line to a predetermined voltage level within a predetermined period after the power supply potential has started up.