Lrc potentiometer dating

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When we rotate the shaft of the potentiometer, we actually rotate the metallic wiper attached to it and hence change the resistance. The relation between the position of wiper and the resistance is called the taper of the potentiometer.In other words taper decides how the resistance will vary when we turn the pot.So some amount of experimentation should be done to choose the value of y.These are also potentiometers but are “set and forget” devices which are directly mounted on to PCB or bread board to fine tune the circuit.For example, you want to bias a transistor to an exact potential which in turn relies on resistance, you can use a trim pot to get the exact voltage (by changing the resistance) and then forget about it.

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If the resistance is equal (50% of the pots value) the pot is linear.

Increasing or decreasing the value of resistance controls the amount of current flowing in a circuit.

The potentiometer is used in various electronics, for example: is used as volume knob in music systems, as fan regulators etc.

Well to answer this, we need to go back to the heart of the potentiometer, the resistive strip.

One way to achieve log taper is to change the width of the cross section of the resistive strip.

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