What is true zero in a potentiometer?
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in the basic potentiometer it is very difficult to obtain true zero as the two contacts cannot coincide correctly. To overcome this drawback, the circuit is modified as shown in the Fig. 5-10. The slide wire BC is shunted by shunt resistor which is tapped at This serves as 0 on main dial.
in the basic potentiometer it is very difficult to obtain true zero as the two contacts cannot coincide correctly. To overcome this drawback, the circuit is modified as shown in the Fig. 5-10. The slide wire BC is shunted by shunt resistor which is tapped at This serves as 0 on main dial.
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