Leeson Chassis Mount SCR Control Manual de usuario Pagina 49

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43
SPEEDMASTER™ OPERATION MANUAL
Multiple fixed speeds
Replace the speed adjust potentiometer with series resistors
with a total series resistance of 10K ohms (Figure 21). Add a
single pole, multi-position switch with the correct number of
positions for the desired number of fixed speeds.
S3
S2
S
1
R1
R2
R4
TO
TAL
S
ERIE
S
RE
S
I
S
TAN
CE
10
K
O
HM
S
R
3
Figure 21. Multiple Fixed Speeds
Application Notes
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