A multi turn wire wound rotary potentiometer has following specifications: Total number of turns, (mathrm{N}=5) Total resistance,
Question:
A multi turn wire wound rotary potentiometer has following specifications:
Total number of turns, \(\mathrm{N}=5\)
Total resistance, \(\mathrm{R}_{a}=10 \mathrm{k} \Omega\)
Total number of winding turns \(=8000\)
Fixed reference voltage, \(\mathrm{V}_{\mathrm{R}}=50 \mathrm{~V}\)
(a) With the movable arm set in the middle, the resistance measured is \(5.05 \mathrm{k} \Omega\). Express linearity as percentage change in resistance.
(b) With the movable arm set at quarter point, the resistance measured is \(2.6 \mathrm{k} \Omega\). What is corresponding linearity in terms of percentage change in resistance?
(c) What is resolution of the potentiometer?
(d) Find gain constant (K) of the potentiometer in volts/turn, volts/rad and Volts/deg.
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