How to choose the resistor in the power adapter

Aug 16, 2023

Resistor is a very common component in the power adapter, sub-circuits usually play a voltage shunt about, then usually in the selection of resistors what need our attention?

First of all, we must correctly select the resistance value and error of the resistor;

1. Pay attention to the limit parameters of the resistor;

2. To prefer general-purpose resistors;

3. Select according to the circuit characteristics;

4. Select the resistor according to the size of the circuit board.

5 have a love of learning to understand . Knowledge of sensitive resistors, thermistors, photosensitive resistors

6.Voltage Sensitive Resistor: The most important feature of the voltage sensitive resistor is that when the voltage added on it is lower than its threshold "UN", the current flowing through it is very small, equivalent to a closed valve, when the voltage exceeds the UN, the current flowing through it surges, equivalent to the valve is open. The use of this function, can inhibit the circuit often abnormal overvoltage, protect the circuit from overvoltage damage.

As a manufacturer of power adapters, we must have a full understanding of the components, only then can we choose the right material, use the right material, and produce high-quality power products.

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