Novel rectifier bridge for integrating current sampling

Abstract

The invention relates to a novel rectifier bridge for integrating current sampling. The novel rectifier bridge comprises an insulating plastic packaging housing, five terminal pins, four unidirectional conductive chips and a constantan wire. One end of each terminal pin extends into the insulating plastic packaging housing and is connected with a copper substrate. The copper substrate, the unidirectional conductive chips and the constantan wire are packaged in the insulating plastic packaging housing. The copper substrates are separated from one another. The four unidirectional conductive chips are glass-passivated low-power-consumption diode chip. The upper end and the lower end of the glass-passivated low-power-consumption diode chip are electrodes. The surface area of the lower-end electrode is larger than that of the upper-end electrode. According to the novel rectifier bridge, reasonable chip distribution is realized; the large surfaces of the four chips are connected with the heat radiating copper substrate; a welding area and a heat radiating area are effectively enlarged; and quick radiation of heat which is generated in operation of the chip to the copper substrate is realized, thereby effectively reducing working temperature of the chip, improving product reliability and prolonging service life of the rectifier bridge.

Description

technical field [0001] The invention relates to a novel rectifier bridge integrating current sampling, which has the function of converting alternating current into direct current and integrating line current sampling. Background technique [0002] At present, the rectifier bridge is widely used in electronic and electrical products because of its reliable operation and convenient installation. Because of its low temperature coefficient of resistance, wide operating temperature range (below 480°C), good processing performance and good welding performance, constantan wire is often used in the production of instruments and meters, electronics and industrial equipment. Current sampling element. [0003] With the advancement of product technology, in consideration of energy saving, environmental protection, controllability and efficiency, various electronic and electrical equipment have begun to use low-power electronic devices to reduce energy consumption, and through high-pre...

AI Technical Summary

Problems solved by technology

[0004] The existing rectifier bridge still has the following deficiencies: (1) When the conventional rectifier bridge is working, the power consumption is relatively high, which makes it difficult to improve the energy saving level; (2) Each manufacturer requires each circuit board The sampling resistance value is not the same, and there is no commonality among the circuit boards, which causes difficulties in production, design and development; (3) The resistance value accuracy of ordinary sampling resistance wire used in conventional circuit technology is between 5% and 10%, and the resistance temperature The coefficient is high, resulting in difficulties such as inaccurate sampling

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