Talk about the difference between winding resistance and corrugation resistance
Want to figure out the difference between the winding resistance and corrugation resistance, and must understand the product morphology and structure of these two resistors.
What is a winding resistor?
The winding resistance is made of nickel-chromium or manganese copper wire, and the copper wire is made from the ceramic tube, which is fixed and can be commissioned.
The advantage of high power winding resistors: high resistance accuracy is extremely high, the noise is small, stable and reliable, the temperature coefficient is small, can withstand high temperature, still working properly at 170 ° C at ambient temperature.
Disadvantages of the winding resistor: large volume, low resistance, and most of 100 kΩ or less. In addition, due to structural reasons, its distributed capacitance and inductance coefficient are relatively large, and cannot be used in high frequency circuits. Because the winding resistance has a choke in the current, the current is not easy to pass.
What is a corrugated resistor?
The ceramic tube is used as a skeleton, which is uniformly wound on the skeleton with a corrugated alloy resistance wire. It has high temperature insulating coatings. It is convenient to install, which has good heat dissipation capacity, which can be used to change the brake, servo system, and power supply. Light electrical bribe.
The resistor is built by a special wave-shaped flat, combined, good heat dissipation, no noise during operation, no interference, and does not produce harmful magnetic fields to people. Production is a strict process requirement. Surface vertical ripples facilitate heat dissipation to reduce parasitic inductance, and use high flame retardant inorganic coatings, effectively protecting the resistance wire is not oxidized, extending service life.
Applications for inverters, elevators, cranes, rolling mills, wire drawing machines, centrifuges, load tests.