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08 2023-09

Introduction to resistance of load resistor

The output resistance is a parameter used to reflect the characteristics of the amplifier circuit itself. The output resistance is the output resistance and has nothing to do with the load resistance. When the amplifier circuit is regarded as a two-port network, ro has nothing to do with external conditions, and in fact there is no such resistor (rce is generally a resistance of tens of kΩ or above, and in the three-pole theoretical circuit model it is It is connected in parallel at the output e··
08 2023-09

Usage rate and derating selection of braking resistor

Usage rate The usage rate of the braking resistor specifies the usage efficiency of the braking resistor to avoid overheating and damage of the braking resistor, which will affect the braking effect of the braking unit. The lower the usage rate of the braking resistor is set, the smaller the degree of heating of the resistor, the less energy consumed on the resistor, and the worse the braking effect. At the same time, the capacity of the braking unit is not fully utilized. Theoretically, when th··
08 2023-09

Calculation of power and size of braking resistor

Power After selecting the resistance value of the braking resistor, the power value of the braking resistor should be determined. The selection of the power of the braking resistor is relatively complicated and is related to many factors. The instantaneous power consumed by the braking resistor is the power value that the braking resistor can dissipate if it works uninterrupted for a long time. However, the braking resistor does not work uninterrupted. This selection involves a lot of waste. You··
08 2023-09

Notes on installation and use of adjustable resistors

Adjustable resistors are a very common electronic component on instrumentation, security equipment, and home appliance control boards. The use of adjustable resistors is mainly considered from the perspective of voltage dividers. The resistance R on both sides of the resistor can be relatively stable and accurate. , the power specific efficiency of the adjustable resistor is small, and the absolute accuracy can be ignored, mainly from the perspective of the current controller. The following is a··
08 2023-09

4. Application methods and models of NTC thermistors in induction cookers

In induction cookers, NTC thermistors are often used as temperature sensors to monitor the temperature inside the furnace. The working principle of this sensor is based on the characteristic that the resistance value of the NTC thermistor changes with temperature. When the heating area of the induction cooker is heated, the resistance value of the NTC thermistor will decrease, thereby sending a signal to the controller to control the temperature inside the furnace. NTC thermistors used in induct··

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Introduction to resistance of load resistor

Usage rate and derating selection of braking resistor

Calculation of power and size of braking resistor

Notes on installation and use of adjustable resistors

4. Application methods and models of NTC thermistors in induction cookers