Resistance Tolerance:5% 2%
The multi-turn wire-wound potentiometer is a kind of resistance wire wound on a ring-shaped skeleton, and the resistance value can be changed by the mechanical angle of multiple turns. The multi-turn wirewound potentiometer can be adjusted precisely.
The multi-turn wire-wound potentiometer has the advantages of high precision, good stability, small temperature coefficient, reliable contact, etc., and is resistant to high temperature and strong power load capacity. The disadvantage is that the resistance range is not wide enough, the high frequency performance is poor, the resolution is not high, and the high resistance wire wound potentiometer is easy to break, the volume is large, and the price is high.
The rotation angle of the multi-turn wire-wound potentiometer and the laws of the output resistance have three types: linear, exponential and logarithmic. The rotation angle of the linear potentiometer has a linear relationship with the output resistance, and it is widely used in current limiting, voltage division, timing, impedance matching and other occasions. The rotation angle of the exponential potentiometer has an exponential relationship with the output resistance, and then fine-tuning and coarse adjustment, such as volume adjustment potentiometer. The rotation angle of the logarithmic potentiometer has a logarithmic relationship with the output resistance. Contrary to the exponential potentiometer, the coarse adjustment is made first and then the fine adjustment, such as the contrast adjustment potentiometer.
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