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1、 The function of precision adjustable potentiometer
In high-frequency signal environments, potentiometers can act as inductors or capacitors. This depends on the characteristics of the external circuit, especially when it comes to electromagnetic compatibility (EMC) issues, where the application of inductors is particularly significant.
When the circuit parameters are uncertain, a 0 ohm resistor can be used as a temporary substitute to confirm the parameters during theoretical debugging, and then replace them with specific numerical components.
During the wiring process, if the actual wiring cannot be completed, a 0 ohm resistor can be added, which usually means that a direct insertion resistor should be used instead of a patch resistor.
When measuring the current of a certain part of the circuit, the 0 ohm resistor can be removed and an ammeter can be connected to measure the current consumption.
Sometimes, there is no actual function in the circuit, and only resistor positions are reserved on the PCB for debugging convenience or compatibility design considerations.
Potentiometers can also be used for jumpers, and when a certain section of the circuit is no longer in use, the corresponding resistor can be directly connected to achieve this.
2、 The Seven Characteristics of Precision Potentiometers
1. The precision potentiometer has a sturdy structure and a long service life. However, due to frequent use and mechanical movement, potentiometers often break down earlier than precision adjustable resistors.
2. Precision potentiometers have a large volume, sturdy structure, and long service life.
3. The potentiometer is installed on the circuit board or casing, and regardless of the installation method, its operating handle needs to extend out of the casing for adjustment. The machine will frequently adjust the potentiometer during use.
4. The precision potentiometer is equipped with an operating handle.
5. The potentiometer also has a dual design.
6. The metal casing of a precision potentiometer is grounded in the circuit, which helps reduce interference and achieve the effect of suppressing interference. And the precision adjustable resistor has no grounding pin, which will be affected by human body induction during adjustment.
7. The output characteristics of precision potentiometers are diverse, and the distribution characteristics of resistors vary among different potentiometers.
Shenzhen Huayi Electronics Co., Ltd. collaborates with Chengdu Xincheng Huachuang Electronics to promote precision adjustable potentiometers to the industrial market and the world!!!
