SWITCHING POWER SUPPLY AND METHOD FOR OPERATING THE SAME

SWITCHING POWER SUPPLY AND METHOD FOR OPERATING THE SAME

PROBLEM TO BE SOLVED: To provide a switching power supply capable of reducing power loss in a queuing mode. SOLUTION: A switching power supply feeds pulsating currents, obtained by rectifying commercial AC power, to a transformer intermittently by a transistor. It rectifies and smoothes the output o...

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1. Verfasser: SAITOU MASAYOSHI
Format: Patent
Sprache:eng
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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
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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creator SAITOU MASAYOSHI
description PROBLEM TO BE SOLVED: To provide a switching power supply capable of reducing power loss in a queuing mode. SOLUTION: A switching power supply feeds pulsating currents, obtained by rectifying commercial AC power, to a transformer intermittently by a transistor. It rectifies and smoothes the output of the transformer to generate a first DC output voltage V1, and also has a regulator that generates a second DC output voltage V2 which is more stable than the first DC output voltage V1. In the energy-saving mode that is achieved when a control signal SLP is H level, a second voltage detecting circuit is operating and repeatedly sends operation or non-operation signals to a PWM circuit, in such a way that the first DC output voltage V1 changes between threshold Vth1 and Vth2 to cause the transistor and PWM circuit to operate intermittently. A second DC output voltage V2 outputs a stable voltage, irrespective of the modes.
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subjects 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
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
title SWITCHING POWER SUPPLY AND METHOD FOR OPERATING THE SAME
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