A kind of temperature fuse resistor with accurate fuse for half short circuit

Abstract

The invention discloses a half-short-circuit and precise melting temperature insurance resistor, which belongs to the field of electrical components and relates to the technology of temperature insurance resistors. By changing the winding structure of the existing resistors, the alloy wires are evenly arranged when the ordinary resistors are wound. , this product uses the central winding process, and the alloy wire of the resistor is intensively wound at 30% of the center of the rod surface, so as to achieve the effect of localized heat generation of the resistor during operation and the effect of accelerating its fusing speed; by changing the current There is a coating layer structure, the coating layer is three layers, and the inner layer is a fuse layer. The fuse coating material containing low melting point metals (sinum, antimony) is used to greatly accelerate the fuse performance of the resistor. The second layer is the barrier temperature suppression layer, which uses a unique formula of temperature barrier material. This material plays a role of heat preservation, so that the temperature of the resistance alloy wire is isolated in the heat preservation layer when the resistance alloy wire is fused. The temperature of the resistance surface layer is lower than 400 ° C. The third layer Make the outer layer for common silicone resin material.

Description

technical field [0001] The invention belongs to the field of electrical components, and relates to the technology of a temperature insurance resistor, in particular to a temperature insurance resistor with half-short circuit and accurate fusing. Background technique [0002] Resistors are generally directly referred to as resistances in daily life. It is a current-limiting element. After the resistor is connected to the circuit, the resistance value of the resistor is fixed. Generally, there are two pins, which can limit the current through the branch it is connected to. A resistor whose resistance value cannot be changed is called a fixed resistor. Those with variable resistance are called potentiometers or variable resistors. An ideal resistor is linear, that is, the instantaneous current through the resistor is proportional to the instantaneous applied voltage. Variable resistors for voltage division. On the exposed resistor body, one or two movable metal contacts are...

AI Technical Summary

Problems solved by technology

[0004] At present, the temperature insurance resistors on the market cannot meet the two methods of vertical molding and horizontal molding required by the safety regulations, and can only be installed in the horizontal molding method. As for the power charger, it is designed to save space. To make the charger smaller, resistors can only be installed according to vertical molding. According to this requirement, the declared product is designed as an axial lead-out method. Like ordinary electronic components, it can be used as horizontal or vertical. Forming to meet various span sizes, providing a guarantee for customer selection and use

[0005] The temperature insurance resistors currently available on the market, the resistor pins are at one end of the resistor, and taping operations cannot be performed. The production of extremely complicated and bent pins will cause creepage risks, resulting in high voltage failures.