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Principles of resistor replacement

sohu | 12/07/2021

Principles of resistor replacement

1. Have a smaller value resistor in series instead of a larger value resistor, or parallel, instead of a smaller value resistor with a large resistance.

2. When low power can replace traditional power resistors with a resistor, one method can be used in series or in parallel. When the resistance values ​​of the series and parallel low-power resistors are not equal, the respective shared system power of the method should be calculated so that the total power density is greater than the rated output power of the original resistor.

3. The replacement resistance should follow the high and not low, it is quite small in principle, that is, replace the low quality of the original high-quality resistor instead of the low-power high-power resistor. .

How to replace chip resistors

1. The original specification resistors should be used as much as possible.

2. The nominal value is the same, as long as the installation space can be allowed, a large power resistor can replace the traditional small power.

3. The method can be used in series or in parallel to obtain the desired nominal value resistor. In the case of power control technology requirements, not only the resistance value after series and parallel connection, but also the power after series and parallel connection and whether the company can meet the requirements of teaching design work.

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