Motor control circuit
A motor control and circuit technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve problems such as damage to electronic components
Inactive Publication Date: 2015-11-04
SUNON ELECTRONICS FOSHAN
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] When a system is in the power-on (POWER ON) state, if the power terminal of a device (such as a motor) is directly connected to the power terminal of the system, the device may generate a large current surge to the system. If the current If the surge is too high, it will cause the electronic components in the system to be unable to withstand and be damaged
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] figure 1 A block schematic diagram of an embodiment of the motor control circuit of the present invention is shown. The motor control circuit 10 of the present invention includes: a capacitor 11 , a resistor 12 , a bypass switch 13 and a pre-device 14 . The capacitor 11 is electrically connected to a power terminal VCC. The resistor 12 is connected in series with the capacitor 11 . The bypass switch 13 is connected in parallel with the resistor 12 . The front device 14 is used to provide at least one operation control signal S1-S4 to a motor 15, and generate at least one delay control signal S5, S6 to the bypass switch 13 according to a set delay time, so that the bypass switch 13 is turned on so that the resistor 12 is short-circuited. In one embodiment, the motor 15 can be a fan motor.
[0041] When a user-side system (not shown) is in a power-on (POWER ON) state, if the power supply terminal VCC of the motor 15 is directly added to the power supply terminal of t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Impedance value | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a motor control circuit. The motor control circuit comprises a capacitor, a resistor, a by-pass switch and a pre-device. The capacitor is electrically connected to a power supply terminal. The resistor is connected in series with the capacitor. The by-pass switch is connected in parallel to the resistor. The pre-device is used to provide at least one operation control signal to a motor and generate at least one delay control signal to the by-pass switch based on setting delay time so that the by-pass switch is conducted. The resistor is connected in series with the capacitor so that a current surge of a power supply conduction moment can be restrained. Because the by-pass switch is connected in parallel to the resistor, after a power supply is in a stable state, the by-pass switch is conducted so that the resistor is in a short circuit state, the capacitor is not influenced by the resistor, a filtering effect can be maintained and a noise is not generated.
Description
technical field [0001] The invention relates to a motor control circuit, in particular to a motor control circuit capable of suppressing the current surge at the moment of power supply turn-on and maintaining the filtering effect. Background technique [0002] When a system is in the power-on (POWER ON) state, if the power terminal of a device (such as a motor) is directly connected to the power terminal of the system, the device may generate a large current surge to the system. If the current If the surge is too high, the electronic components in the system will not be able to bear it and be damaged. Contents of the invention [0003] The invention provides a motor control circuit, which can suppress the current surge at the moment when the power supply is turned on, and can maintain the filtering effect without generating noise after the power supply enters a steady state. [0004] The invention provides a motor control circuit. In one embodiment, the motor control cir...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02P23/00
Inventor 蔡依樵伍家进王建诚郑宗根
Owner SUNON ELECTRONICS FOSHAN