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False-operation resistant buffering port

A technology of anti-misoperation and ports, which is applied in the direction of logic circuit connection/interface layout, etc., can solve problems such as surges, damage to electronic devices, and distraction, and achieve the effect of avoiding damage and protecting electronic devices

Inactive Publication Date: 2013-09-04
CHENGDU RUIYI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The switches of many electronic devices are often turned on due to accidental touches, which brings a lot of inconvenience to users. It takes a lot of care and energy to use them, and a dangerous switch may cause damage to electronic devices. , and even cause some unpredictable accidents, and electronic equipment often appears overvoltage, surge and other phenomena due to instant opening, which leads to damage to the circuit in the electronic equipment

Method used

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  • False-operation resistant buffering port
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 As shown, the anti-maloperation buffer port includes an anti-maloperation circuit and a buffer circuit. The anti-maloperation circuit includes a triode Q1 and a control circuit. The collector of the triode Q1 is connected to the port, and the emitter is connected to the internal circuit. One end of the control circuit is connected to the port, the other end is connected to the triode Q1, the control circuit includes a comparison circuit and a comparator M, the comparison circuit includes a first comparison circuit and a second comparison circuit, and the first comparison circuit includes a field effect transistor Q2, resistor R1 and capacitor C, the source of the field effect transistor Q2 is connected to the power supply, its drain is grounded through the resistor R1 and capacitor C in turn, the gate of the field effect transistor Q2 is connected to the port, and the second comparison circuit includes Resistor R2 and Zener diode D, the negative pole of...

Embodiment 2

[0017] Such as figure 2 , the structure of this embodiment is basically the same as that of Embodiment 1, except that a protective resistor R3 is provided between the gate and source of the field effect transistor Q2 to protect the field effect transistor Q2.

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Abstract

The invention discloses a false-operation resistant buffering port which comprises a false-operation resistant circuit and a buffering circuit. The false-operation resistant circuit comprises a triode Q1 and a control circuit. The buffering circuit is arranged between a grid electrode of a field-effect tube Q2 and a port of the field-effect tube Q2 and comprises a trigger JK, a timer HM and an electronic switch J. The false-operation resistant buffering port has the advantages that the false-operation resistant buffering port is arranged between a switch port and an internal circuit and the buffering circuit is firstly started and can be completely started in a set time, so that damage caused by surging and over-voltage to a following circuit is avoided; then the false operation resistant circuit is started, a capacitor in the circuit needs to be charged firstly, and then the switch port is connected with the internal circuit, so that start of a switch is effective. Therefore, when the switch is operated by mistake, the switch is rapidly switched off and the switch port is not connected with the internal circuit in the period, so that no influence is generated and an electronic device is protected.

Description

technical field [0001] The invention relates to a protection circuit, in particular to an anti-misoperation buffer port. Background technique [0002] The switches of many electronic devices are often turned on due to accidental touches, which brings a lot of inconvenience to users. It takes a lot of care and energy to use them, and a dangerous switch may cause damage to electronic devices. , and even cause some unpredictable accidents, and electronic equipment is often turned on instantaneously, resulting in overvoltage, surge, etc., which leads to damage to the circuit in the electronic equipment. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, and provide an anti-misoperation buffer port, which overcomes the accident caused by the switch of the existing electronic device being accidentally touched, and the circuit in the electronic device is often caused by overvol...

Claims

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Application Information

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IPC IPC(8): H03K19/0175
Inventor 汪磊
Owner CHENGDU RUIYI INFORMATION TECH