PROBLEM TO BE SOLVED: To miniaturize a device, and to reduce the cost by connecting a means to feed higher voltage than that of a main power supply as a power source for driving to a fieldeffect transistor drive circuit for driving an upper stage DC motor.KAWASHIMA KAZUFUMI...
PROBLEM TO BE SOLVED: To make possible a highly stable rotational-speed control of a DC motor, by operating respondently to the output of a second digital comparator just before resetting a counter for measuring a real period an up/down counter for setting a non-current-application term.收藏...
CONSTITUTION:One end of a DC motor M having the other end connected with an external power supply Vcc is connected to a first terminal T1, a shut resistor Rt having one end connected with the external power supply Vcc is connected to a second terminal T2, and the junction of two speed ...
PURPOSE:To reduce the saturating voltage thus to improve the availability of power source by constituting the element placed between the power source and the DC motor with one transistor and one thyristor. CONSTITUTION:When supplying a current to the base of transistor 18 and the gate of thyristor...
PURPOSE:To maintain the voltage applied to a DC motor substantially constant even if a battery voltage is varied by connecting a transistor in which the voltate dividing output of a voltage divider for dividing the battery voltage is as the base input in parallel with the base circuit of a ...
摘要: PURPOSE:To obtain a preferable torque-to-rotating speed characteristic of a DC motor in broad rotating speed range upon alteration of the voltage in an armature winding circuit by switching the connection of battery group installedin an electric motor operated vehicle in divided manner....
Drive circuit for brushless DC fan motor A drive circuit for a brushless DC fan motor for rotating a rotor (permanent magnet) by a rotating magnetic field produced by turning on/off the flow of electric current to field coils by a signal to control terminals of switch elements ... J Xi,...
DC brushed motor drive with circuit to reduce did 优质文献 参考文献 引证文献Power on reset circuit arrangement A power on reset circuit continuously asserts a reset output signal to a reset logic state (e.g., RESET) during the recovery of a power supply voltage from an inoperative voltage lev...
PMDC Motor The main function of field winding is to produce the functioning magnetic flux within the air gap as well as wound onthe statorof the motor while armature winding can be wound on the rotor. Inactive carbon brushes are pushed on the commutator like in conventional DC motor. The op...
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