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Patent Searching and Data


Title:
PARALLEL OPERATION DEVICE OF PULSE GENERATING CIRCUIT
Document Type and Number:
Japanese Patent JP2000295767
Kind Code:
A
Abstract:

To operate a plurality of units of DC pulse generating circuits in parallel without enlarging the circuit scale of a power circuit.

A full wave rectified waveform of DC voltage is obtained by lowering the voltage given from an AC power source 1 to about 10 V, and rectifying the full waves of this. Then, this DC voltage is compared with reference voltage Vref in a converter 21, so the output of the comparator becomes rectangular waveform. Then, the peak point of the full wave rectified waveform can be obtained by counting the 'H' level time of this rectangular waveform, and the first reference pulses are generated 23, with this peak point as a reference, and further the second reference pulses which are made by shifting these first reference pulses by specified time are generated. Next, a charge/discharge control circuit 7 generates a series of pulse trains consisting of a plurality of times of charge pulses and one time of charge pulses, based on the second reference pulses, and gives this pulse train to each DC pulse control circuit, shifting it by specified times. Hereby, the charge start timing and the timing of discharge of each DC pulse generator do not overlap, so this device can reduce the current value at large.


Inventors:
DEN SEIJI
KUMAGAI TORU
TAKIZAWA TETSUYA
Application Number:
JP9537799A
Publication Date:
October 20, 2000
Filing Date:
April 01, 1999
Export Citation:
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Assignee:
NIPPON N U S KK
KUMAGAI DENKI KOJI KK
UGAJIN DENKI KK
International Classes:
H05C1/04; E02B1/00; H02J1/00; (IPC1-7): H02J1/00; E02B1/00
Attorney, Agent or Firm:
Masayuki Asakura