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Patent Searching and Data


Title:
DIGITAL PHASE CONTROLLING CIRCUIT
Document Type and Number:
Japanese Patent JPS57206934
Kind Code:
A
Abstract:
PURPOSE:To simplify the constitution of a titled circuit by presetting phase controlling data to a phase controlling pulse generating circuit by an output from the phase controlling pulse generating circuit which is generated synchronously with an output to a circuit part operated in parallel with the phase controlling pulse generating circuit. CONSTITUTION:An electric power source synchronizing signal is outputted from an electric power source synchronizing signal generating circuit 1 to which the voltage of a commercial electric power source 7 is applied and inputted to a phase controlling pulse generating circuit 4. After measuring phase contol timing based upon a phase controlling data inputted from a phase controlling data part 6 in the preceding half cycle, the phase controlling pulse generating circuit 4 outputs a phase controlling pulse. The phase controllig pulse is inputted to a phase controlling element 5 to phase control a load 9 through the commercial electric power source 7 and also inputted to the phase controlling data part 6 to preset the phase controlling data for the succeeding half cycle from the phase controlling data part 6 to the phase controlling pulse generating circuit 4.

Inventors:
NIIYA HIROSHI
IWATA NOBUO
Application Number:
JP9274481A
Publication Date:
December 18, 1982
Filing Date:
June 15, 1981
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G05F1/10; H02M1/08; (IPC1-7): G05F1/455; H02M1/08