SPEED CONTROL

15

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1.8 1.7 1.6 1 5

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RESISTANCE OF PYRO ELECTRIC CONDUCTOR [SILICONRODNO.II. FIG. 6 "ELECTRIC CIRCUITS"]

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1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4

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OHMS
4.0

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3 5
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30
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k,

9, 5

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20

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1 5

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1 0

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0.5

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1
0 £
0 3
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0 5
0 (
0 7
o e
0 J
0 1
30 1
LO 1
20 1:
JO AIV
PS.

FIG. 6.—Variation of resistance of pyro-electric conductor, with current.

PYRO-ELECTRIC RESISTANCE IN SECONDARY OF I NDUCTION MOTOR,

Y0 = .01-.13* ; Z0=.1+.3j ; Z^.I+.Sj ; r = 2.4,6
-j SPEED CONTROL BY PYRO ELECTRIC CONDUCTOR.

SPEED CURVES.

0.4

0.5

0.7

0.8

0.9

1.0

0.1 0.2 0.3
FIG. 7.—Speed control of induction motor by pyro-electric conductor
speed curves