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Figures (5)

Fig. 1
Fig. 1

The single tube potentiometer.

Fig. 2
Fig. 2

Characteristic curves for two tubes.

Fig. 3
Fig. 3

The double tube potentiometer.

Fig. 4
Fig. 4

Curve of impedance and inductance on lighting circuit.

Fig. 5
Fig. 5

Inductance plotted against impedance for 1,000 cycles.

Equations (3)

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R = 1 / C p
R 2 = r 2 + L 2 p 2
R = 2 π f 2 π = f henries