Anti-strong interference switch control signal generating circuit of system power supply

A technology of signal generation circuit and switch control, which is applied in the direction of electrical components, output power conversion devices, etc., can solve problems such as being susceptible to interference, and achieve the effect of ensuring normal shutdown, normal power supply, and low cost

Active Publication Date: 2010-11-10
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcoming that the existing micro-controller mode power switch control signal generation circuit is susceptible to interference, the present invention provides a system power switch control signal generation circuit that is resistant to strong interference

Method used

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  • Anti-strong interference switch control signal generating circuit of system power supply
  • Anti-strong interference switch control signal generating circuit of system power supply

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Embodiment Construction

[0011] The invention adopts a pure hardware circuit structure to avoid the software crash problem caused by the use of micro-controllers. It is mainly composed of four modules: a switch signal self-locking module, a switch signal isolation module, an on and off state switching module, and a soft shutdown interface module. When the power light touch switch is pressed, the on and off state switching module outputs one of the states according to the current state, which is captured by the switch signal self-locking module and output to the switch signal isolation module, and finally reaches the input interface of the system power supply, In this way, the system power supply can be turned on and off. The soft shutdown interface module is mainly used to receive the soft shutdown signal from the system, and connect with the switch signal self-locking module, so as to achieve the soft shutdown function. The switch signal self-locking module is mainly used to lock the state that needs...

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Abstract

The invention discloses an anti-strong interference switch control signal generating circuit of a system power supply, which comprises a switch signal self-locking module, a switch signal isolation module, an opening and closing state switching module and a soft-off interface module, wherein the switch signal isolation module, the opening and closing state switching module and the soft-off interface module are respectively connected with the switch signal self-locking module. The circuit can stably output the switch state of the power supply in an environment with strong interference, ensure the normal power supply and the normal closing of the system power supply and be applied in the harsh environment. In addition, the power supply switch control signal generating circuit is mainly constituted by an integrated circuit of a resistor-capacitor device and a hex inverter, and the cost is very low.

Description

technical field [0001] The present invention relates to an electronic device, especially a system power supply for anti-strong interference that can be applied to various electronic devices such as instruments and information devices with light touch switches for power sources, especially in electronic devices with strong interference environments. The switch controls the signal generating circuit. Background technique [0002] At present, in the electronic equipment with power supply tact switch, the switch generation circuit that controls the power on and off is basically realized by single-chip microcomputer or other micro-controllers, which collects the power supply tactile information on the electronic equipment through software. The state of the switch, and judge whether it is on or off according to the length and time of pressing the button, so as to output the corresponding signal to the system power supply (such as ATX power supply), and realize the on and off of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44
Inventor 舒金表张兴明吴坚
Owner ZHEJIANG DAHUA TECH CO LTD
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