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Title:
DIGITAL CONTROL POWER SOURCE
Document Type and Number:
Japanese Patent JPH04275063
Kind Code:
A
Abstract:

PURPOSE: To provide a power source which solves an expensive variable gain control, a variation in a soft starting time of a power source device upon increasing of a recovery time from an overshoot, lapse of a time and has high noise resistance in a digital control power source device used mainly in office devices, industrial devices, etc.

CONSTITUTION: A microcomputer 2, a memory 3, an A/D converter 9, an operating power source 1, a voltage control circuit 4, an output circuit 5 controlled by the controller, a reference voltage 7, and an error amplifier 8 are provided. An output of an output terminal 6 is compared with a reference voltage 7 by an error amplifier 8, the amplified voltage is A/D-converted by means of the converter 9, then applied to the microcomputer 2, the A/D-converted value is converted to an address, the content of the memory 3 is read, calculated, the state of the control circuit 4 is decided based on the processed result, and applied to the circuit 5 to control the output of the power source device.


Inventors:
Kato, Hiroji
Application Number:
JP1991000032806
Publication Date:
September 30, 1992
Filing Date:
February 27, 1991
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H02M3/155; H02M3/28; (IPC1-7): H02M3/155; H02M3/28



 
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