Title:
CONTROLLER FOR DRIVE OF ALTERNATING CURRENT SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS5932374
Kind Code:
A
Abstract:
PURPOSE:To shorten a time when the AC synchronous motor is synchronized by supplying driving currents larger than a constant-current value on synchronizing for a time determined previously after starting. CONSTITUTION:When a power supply is turned ON, a reset circuit 7 outputs '0' at some time limit, and resets a counter 10. When the count value of the counter 10 is 128 or less, transistors 8, 9 are turned ON by an output '1' from an inverter 11, and constant voltage is applied to an inverter drive circuit 4. Consequently, driving currents larger than driving currents on synchronizing are fed. When the count value reaches 128, the inverter 11 outputs '0' by an output '1' from the counter 10. Accordingly, the inverter drive circuit 4 is supplied with constant currents from a constant-current power supply 1 because the transistor 8 and successively the transistor 9 are turned OFF.
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Inventors:
MARUI NOBUHIKO
Application Number:
JP13928682A
Publication Date:
February 21, 1984
Filing Date:
August 11, 1982
Export Citation:
Assignee:
FUJI XEROX CO LTD
International Classes:
H02P1/46; H02P1/50; (IPC1-7): H02P1/46
Attorney, Agent or Firm:
Nobuyuki Matsubara
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