Enable switch control circuit

A switch control circuit and resistor technology, applied in electronic switches, electrical components, pulse technology, etc., can solve problems such as jitter, complex circuit structure, etc., and achieve the effect of saving costs and improving reliability

Active Publication Date: 2020-07-14
XIAN MICROELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional enabling switch control circuit cannot meet the current requirements of high reliability and

Method used

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  • Enable switch control circuit
  • Enable switch control circuit

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0023] like figure 1 As shown, the enable switch control circuit of the present invention includes power VCC1, power VCC2, optocoupler U1, comparator U2, capacitor C1, capacitor C2, diode D1, resistors R1-R9 and transistor V1.

[0024] The comparator U2 is used to receive the level change of the input terminal to reflect the required control level signal to the output terminal. The inverting input terminal of the comparator U2 is connected to the enable signal input terminal EN through the resistor R6, and the inverting input terminal is connected through the resistor R6. R2 is connected to the positive terminal of the power supply, and the enable signal input terminal EN is connected to the negative terminal of the power supply of the comparator U2 through the resistor R9; the resistors R2, R6 and R9 are generated at the inverting input terminal of the comparator U2,...

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Abstract

The invention discloses an enable switch control circuit, which comprises a power supply VCC1, a comparator U2 and a triode V1. When the enable forbidding end INH is grounded and the enable signal input end EN is grounded or suspended, the triode V1 is in a high-resistance state, and the enable switch control circuit is in a closed state; when the enable forbidding end INH is suspended and the enable signal input end EN is suspended, the triode V1 is in a high-resistance state, and the enable switch control circuit is in a closed state; when the enable forbidding end INH is suspended and the enable signal input end EN is grounded, the triode V1 is in a conducting state, and the enable switch control circuit is in an on state. When the enable switch control circuit is turned on, the enableswitch control circuit outputs the determined low level, so that no jitter is generated in the switch conversion process, and the reliability is improved.

Description

technical field [0001] The invention belongs to the field of enabling switches, and relates to an enabling switch control circuit. Background technique [0002] The existing enabling switch control circuit conventionally uses relays, program-controlled mechanical switches, manual mechanical switches, triodes or field effect transistors and other means to realize the switch control of the circuit. The traditional enabling switch control circuit cannot meet the current requirements of high reliability and low cost for enabling switch control of products due to its complex circuit structure and the jitter of the switch instantaneously. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the above shortcomings of the prior art, to provide an enabling switch control circuit, to reduce the cost of the circuit, and to avoid jittering at the moment of switching, thereby improving reliability. [0004] To achieve the above object, the present inve...

Claims

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Application Information

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IPC IPC(8): H03K17/78
CPCH03K17/78
Inventor 范喆张宏科
Owner XIAN MICROELECTRONICS TECH INST
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