Title:
DRIVING SYSTEM FOR PULSEEMOTOR
Document Type and Number:
Japanese Patent JPS5678395
Kind Code:
A
Abstract:
PURPOSE:To easily set a necessary minimum level of exciting currents at the rotation rising, constant rotation and the maintenance by a method wherein a value of an exciting current flowing in a winding is compared with an output of a reference voltage generator which generates different reference voltages. CONSTITUTION:When a signal is made input to a terminal J1, a transistor Tr1 is turned on through transistors Tr5, 6, 8, 9, a motor winding X1 is excited and the excitation is removed by the ON-operation of a transistor Tr7. ON or OFF operation of the transistor Tr7 is conducted by comparing with a voltage of an exciting current detecting resistor R5 and a voltage from a reference voltage generator F which generates 3 kinds of reference voltages according to signals fed from terminals J2, J3, by means of a comparator COMP. Accordingly, a necessary minimum level of the exciting current in each state can easily be set by changing over the reference voltages, and an excessive making of energy can be prevented.
Inventors:
ISHIKAWA TORAAKI
Application Number:
JP15410179A
Publication Date:
June 27, 1981
Filing Date:
November 28, 1979
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02P8/12; (IPC1-7): H02P8/00