Analog quantity signal output circuit

An analog signal and output circuit technology, applied in the field of analog signals, can solve problems such as PCB design and structural design difficulties, low safety, poor contact, etc., to achieve the effect of facilitating PCB design and structural design and improving the safety of use

Active Publication Date: 2018-05-22
SHENZHEN INVT ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the dial switch or the jumper cap are all connected with mechanical contacts, when the equipment is used in a harsh environment, it is prone to poor contact, which makes the user prone to electric shock during operation, and the safety is low; In addition, due to the need to

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[0028] The core of the present invention is to provide an analog signal output circuit. The whole process does not require the user to manually intervene in the hardware circuit, which improves the safety of the user, facilitates PCB design and structure design, and can also realize remote control of equipment.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Please refer tofigure ...

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Abstract

The invention discloses an analog quantity signal output circuit which comprises the components of an amplification circuit which is used for receiving an original signal and amplifies the original signal for obtaining a voltage analog quantity signal; a voltage-to-current converting circuit which is used for converting a voltage analog quantity signal to a current analog quantity signal, a switching instruction output circuit which is used for outputting a corresponding analog quantity signal switching signal according to the user instruction, a first switch tube, a second switch tube and a switching circuit. The output end of the amplification circuit is connected with the first end of the first switch tube. The output end of the voltage-to-current converting circuit is connected with the first end of the second switch tube. The second end of the first switch tube is connected with the second end of the second switch tube. The common end is used as the output end of the analog quantity signal output circuit. The analog quantity signal output circuit has advantages of improving safety in using the analogy quantity signal output circuit by a user, facilitating PCB designing and structure designing, and realizing remote controlling to equipment.

Description

technical field [0001] The invention relates to the technical field of analog signals, in particular to an analog signal output circuit. Background technique [0002] In the industrial field, a large number of applications use analog signals to transmit command signals and feedback signals. Therefore, many industrial controllers, actuators, sensors, and monitoring modules need to be equipped with voltage and / or current analog output circuits to achieve analog The output function of the quantity signal. [0003] At present, there are already analog output circuits that support both analog voltage signal output and analog current signal output. In the prior art, dial switches or jumper caps are usually used to switch between voltage signals and current signals. , the user needs to manually operate the dial switch or jumper cap when switching. However, since the dial switch or the jumper cap are all connected with mechanical contacts, when the equipment is used in a harsh env...

Claims

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Application Information

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IPC IPC(8): G05B19/042H03K17/693
CPCG05B19/0423H03K17/693
Inventor 付吉勇
Owner SHENZHEN INVT ELECTRIC
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