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Patent Searching and Data


Title:
POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JPS61277372
Kind Code:
A
Abstract:
PURPOSE:To stabilize and control voltage, and to compact the titled device by connecting a primary coil at both ends of a capacitor for resonating a choke coil and mounting an output current control circuit at both ends of a secondary coil. CONSTITUTION:A series body of transistors (hereinafter called Tr) Q1, Q2 for switching is connected to a DC input E while a parallel body of diodes D1, D2 and capacitors C1, C2 is connected in parallel with each Tr. A series body of a choke coil L and a capacitor C is fitted in parallel with the Tr Q2, and a primary coil Np for an inverter transformer T is connected to the capacitor C. DC voltage V1, V2 is outputted severally through magnetic amplification circuits MA, rectification circuits RE, etc. from secondary coils Ns for the transformer T. Accordingly, the maximum value of voltage applied to the Trs Q1, Q2 reaches E and the voltage takes a trapezoid waveform, and the currents of the choke coil L take a sine wave shape by series resonance, and the voltage of the capacitor C also takes the sinusoidal wave shape, thus keeping voltage applied to the primary coils Np constant.

Inventors:
OKOCHI SADAO
Application Number:
JP11835785A
Publication Date:
December 08, 1986
Filing Date:
May 31, 1985
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H02M3/28; (IPC1-7): H02M3/28
Domestic Patent References:
JPS5658777A1981-05-21
JPH0222629A1990-01-25
JPS56112878A1981-09-05
Attorney, Agent or Firm:
Saichi Suyama