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Isolation circuit and method

A technology for isolating circuits and circuits, applied in the field of signal processing, can solve problems such as inability to start up, unfavorable circuit isolation, etc., and achieve the effects of preventing short circuits and recovering oscillations

Pending Publication Date: 2020-09-18
西安博特睿电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing isolation circuit starts with high voltage and isolates with low voltage, which is not conducive to the rapid and effective isolation of the circuit when a fault occurs, and when the equipment is normal, if it is started with high voltage, there may be a risk of failure to start

Method used

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] An embodiment of the present invention provides an isolation circuit, such as figure 1 As shown, the circuit includes a power supply and reference voltage circuit module, a control circuit module, and a switch circuit module;

[0039] The power supply and the reference voltage circuit module are used to obtain a voltage signal from the switch circuit module, supply power to the control circuit module and provide a reference voltage;

[0040] The control circuit module is used to obtain a sampling signal from the switch circuit module, and control the on-off of the switch circuit module acco...

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Abstract

The invention discloses an isolation circuit and method. The isolation circuit comprises a power supply and reference voltage circuit module, a control circuit module and a switch circuit module; thepower supply and reference voltage circuit module is used for acquiring a voltage signal from the switching circuit module, supplying power to the control circuit module and providing reference voltage; the control circuit module is used for acquiring a sampling signal from the switching circuit module and controlling the on-off of the switching circuit module according to a comparison relationship between the sampling signal and a reference voltage; the delay module is also used for delaying the turn-off of the channel when controlling the on-off of the switch circuit module; and the switch circuit module is used for obtaining a 12V-32V voltage signal as input through a bus and outputting the voltage signal under the control of a switch control signal. According to the invention, low-voltage starting and high-voltage isolation can be realized, the circuit is a reverse control circuit, rapid starting and rapid isolation can be realized, a certain interference signal can be effectivelyavoided, and short circuit and oscillation recovery of the circuit can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to an isolation circuit and a method. Background technique [0002] The existing isolation circuit is started by high voltage and isolated by low voltage, which is not conducive to the rapid and effective isolation of the circuit when a fault occurs, and when the equipment is normal, if it is started by high voltage, there may be a risk of failure to start. Contents of the invention [0003] In view of this, the main purpose of the present invention is to provide an isolation circuit and method. [0004] In order to achieve the above object, technical solution of the present invention is achieved in that way: [0005] An embodiment of the present invention provides an isolation circuit, which includes a power supply and a reference voltage circuit module, a control circuit module, and a switch circuit module; [0006] The power supply and the reference volt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156H02M1/36H02H7/12H05B45/345
CPCH02H7/1213H02M1/36H02M3/156H05B45/345
Inventor 张付生杜国涛李钢宗王瑞旺
Owner 西安博特睿电子科技有限公司
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