Switch type regulating circuit and double-coil motor device

Abstract

The invention relates to a switch type regulating circuit for a double-coil motor device, which comprises a grid-control switching element and a drive circuit. When an induction voltage signal generated by one coil in double coils exceeds a reference value, the drive circuit generates an output signal to conduct the grid-control switching element, and thereby the damage of an integral circuit by conducting a parasitic diode of the grid-control switching element can be prevented.

Description

technical field [0001] The present invention relates to a circuit for a double-coil motor device, in particular to a switchable adjustment circuit which can prevent the circuit from malfunctioning. Background technique [0002] In many electronic products, a large amount of heat is generated due to the thermal effect of the current when the circuit is in operation. At this time, a fan motor is needed to assist the electronic product to dissipate heat when the circuit is in operation. One of the devices commonly used to control fan motors is the use of dual coil motor devices such as figure 1 As shown, it is a schematic diagram of a double-coil motor device 1, and its operation is to pass current to one of the double coils 13 wound on the stator 11 of the double-coil motor device 1, due to the connection between the coil and the rotor The magnetic force drives the fan 15 to rotate, and the winding method for the double coils 13 on the same stator 11 is: one of the coils 13a ...

AI Technical Summary

Problems solved by technology

[0006] In view of this, how to prevent the charge flow caused by the conduction of parasitic elements and reduce the operating performance of the overall circuit is an urgent problem to be solved in the industry.

Images