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Optical fiber isolated dry contact output circuit device

A technology of output circuit and optical fiber isolation, applied in the field of converters, can solve the problem that the signal is easily interfered

Inactive Publication Date: 2016-03-09
AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dry node output circuit device with optical fiber isolation, the signal is transmitted through light, which solves the problem that the signal is susceptible to interference, and the signal can be transmitted over a long distance

Method used

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  • Optical fiber isolated dry contact output circuit device
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Embodiment Construction

[0012] In order to describe the present invention more specifically, the technical solution and related principles of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. The following description of the embodiments is only to provide a clear explanation of the present invention by showing examples of the present invention. The present invention is not limited to any specific configuration presented below, but covers any modification, replacement, improvement of related elements without departing from the spirit of the present invention.

[0013] Such as figure 1 As shown, the present invention includes an optical fiber receiving circuit a, a shaping and reverse circuit b, a triode amplifying output circuit c, a relay control circuit d, and a signal lamp indicating circuit e.

[0014] Such as figure 2 As shown, the optical fiber receiving circuit a is composed of an optical fiber receiver and a capacitor. Th...

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Abstract

The invention discloses an optical fiber isolated dry contact output circuit device, and belongs to the technical field of a converter. The optical fiber isolated dry contact output circuit device comprises an optical fiber receiving circuit, a shaping and inverting circuit, a triode amplification output circuit, a relay control circuit and a signal lamp indicating circuit. The optical fiber receiving circuit is connected with the shaping and inverting circuit. The shaping and inverting circuit is connected with the triode amplification output circuit. The triode amplification output circuit is connected with the relay control circuit and the signal lamp indicating circuit, and provides a DC channel when a triode is conducted. The relay control circuit and the signal lamp indicating circuit are connected through DC voltage of +5V. The invention is advantageous in that the problem that the signal is susceptible to interference is solved, and the signal can be transmitted through a great distance. Quick response can be made, and the purposes of photoelectric isolation and the weak current control of a high current by using a relay can be achieved.

Description

technical field [0001] The invention belongs to the technical field of converters, and in particular provides an optical fiber isolated dry node output circuit device. It solves the problems of long-distance signal transmission and signal interference in high-power transmission systems. Background technique [0002] With the development of power electronics technology, the power of the converter is getting bigger and bigger, especially in the high-power converters of several megawatts to tens of megawatts, the cabinet of the converter is very long, and the signal transmission is relatively long. It is difficult for ordinary electrical signals to transmit such a long distance, and the electromagnetic interference is very serious due to the switching of the power device of the converter. Contents of the invention [0003] The purpose of the present invention is to provide a fiber-isolated trunk node output circuit device, the signal is transmitted through light, which solve...

Claims

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Application Information

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IPC IPC(8): H02M1/092H02M1/44
Inventor 石志学罗晓飞金传付宋克俭路尚书张云贵
Owner AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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