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Signal isolation circuit and signal isolation device

A technology for signal isolation and circuit isolation, which is applied in the direction of logic circuits using optoelectronic devices, logic circuits using specific components, etc., which can solve the problems of inconvenient mass production and difficult debugging of signal isolation circuits, so as to speed up efficiency and solve debugging difficulties. Great, reducing uncontrollable effect

Pending Publication Date: 2021-06-11
深圳麦科信科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a signal isolation circuit, which aims to solve the problem that the existing signal isolation circuit is very difficult to debug and is not convenient for mass production

Method used

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  • Signal isolation circuit and signal isolation device
  • Signal isolation circuit and signal isolation device
  • Signal isolation circuit and signal isolation device

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the orientation indication will also change accordingly.

[0039] In the present in...

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Abstract

The invention discloses a signal isolation circuit and a signal isolation device. The signal isolation circuit comprises: a signal access end; a signal output end; an isolation driving circuit which is used for carrying out operational amplification on the amplified signals and then respectively outputting two paths of amplified signals to the low-frequency isolation circuit and the high-frequency isolation circuit, wherein the low-frequency isolation circuit is used for carrying out isolation processing on the received amplified signal to obtain two paths of isolated low-frequency signals, and is used for respectively outputting the two paths of isolated low-frequency signals to the high-frequency isolation circuit after current-voltage conversion is carried out on the two paths of isolated low-frequency signals, and the high-frequency isolation circuit is used for performing operation according to the amplification signal after direct current isolation and one low-frequency signal after current-voltage conversion to obtain a high-frequency signal in the amplification signal, performing signal isolation on the high-frequency signal, and obtaining an isolated input signal according to the other path of low-frequency signal after current-voltage conversion and the isolated high-frequency signal. According to the technical scheme, the problems that a signal isolation circuit is large in debugging difficulty and inconvenient to produce in batches can be solved.

Description

technical field [0001] The invention relates to the field of electronic measuring equipment, in particular to a signal isolation circuit and a signal isolation device. Background technique [0002] In the field of electrical signals, for reasons such as electrical personal safety, some occasions require signal isolation of electrical signals. The existing signal isolation scheme is to separate the incoming amplified signal into independent high-frequency components and low-frequency components, and after corresponding signal isolation, the isolated amplified signal is output by an adding circuit. [0003] However, the feedback loops in the two-way signal isolation circuit of high-frequency and low-frequency components in this scheme are completely independent, so after the signal reaches the isolation secondary, the high-frequency and low-frequency components are uncontrollable, and it is necessary to separate components in the debugging circuit The parameters are used to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/14
CPCH03K19/14
Inventor 张兴杰
Owner 深圳麦科信科技有限公司
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