SWITCHING POWER SOURCE

SWITCHING POWER SOURCE

PURPOSE:To accurately hold the output stability of two outputs without increasing loss by using a switching circuit, a transformer and a controller of one system. CONSTITUTION:Part of the DC output of a rectifying and smoothing circuit 3 is input to an error amplifier 8, which amplifies an error fro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: ISHIZAKI YOSHIFUMI
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
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:PURPOSE:To accurately hold the output stability of two outputs without increasing loss by using a switching circuit, a transformer and a controller of one system. CONSTITUTION:Part of the DC output of a rectifying and smoothing circuit 3 is input to an error amplifier 8, which amplifies an error from a reference voltage Vref2 to vary the oscillating frequency of a sawtooth wave oscillator 43 which forms a pulse width modulation controller 4 by the error amplification signal. Accordingly, the sawtooth wave of the varied frequency is pulse-modulated in a pulse width modulator 42, and the switching circuit 1 is driven by the frequency. Thus, the output stability of the two outputs can be held accurately without increasing the loss.