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Analog quantity output channel expansion circuit

A technology for output channels and extended circuits, which is applied in simulators, general control systems, instruments, etc., can solve problems such as high cost and excessive circuit board area, and achieve the effect of reducing area and simple circuit structure

Pending Publication Date: 2021-12-03
DATANG NANJING POWER PLANT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve precise power supply for each electronic component, it is necessary to configure a power supply circuit for each electronic component, which makes the area of ​​the entire circuit board too large and the cost is high

Method used

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  • Analog quantity output channel expansion circuit
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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...

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Abstract

An analog quantity output channel expansion circuit, disclosed by the present invention, comprises an analog switch which is provided with a plurality of output ends; a main control module which is used for controlling the gating of the analog switch to the output end and is connected with the input end of the analog switch; a digital-to-analog converter which is used for converting the digital quantity output by the main control module into analog quantity, wherein the input end of the digital-to-analog converter is connected with the main control module, and the output end of the digital-to-analog converter is connected with the analog switch; and an amplifying circuit which is used for adjusting the output voltage of the analog switch and is connected with the output end of the analog switch. The analog quantity output channel expansion circuit can output various voltages with different volt values, the circuit structure is simple, and the area of a circuit board is reduced.

Description

technical field [0001] The invention belongs to the field of analog output circuits, and in particular relates to an analog output channel expansion circuit. Background technique [0002] In the field of instrumentation and industrial automation, during the planning and design of instrumentation and control systems, due to the large number of electronic components in the control system, the working voltage of each electronic component is not the same. In order to provide precise power supply to each electronic component, it is necessary to configure a power supply circuit for each electronic component, so that the area of ​​the entire circuit board is too large and the cost is high. [0003] In view of this, the present invention is proposed. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an analog output channel expansion circuit capable of outputting multiple vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/21119
Inventor 司徒有功陈左亮娄琦张雷杨磊陈可可冯佩王琦媛
Owner DATANG NANJING POWER PLANT