User Manual

44
Application Notes SPEEDMASTER™ OPERATION MANUAL
Adjustable speeds using potentiometers in
series
Replace the speed adjust potentiometer with a single pole,
multi-position switch, and two or more potentiometers in series,
with a total series resistance of 10K ohms. Figure 22 shows a
connection for fixed high and low speed adjust potentiometers.
CW
S3
S
2
S1
CW
5
K
O
H
M
5
K
OH
M
HIG
H
SPEE
D
LO
W
S
PEE
D
Figure 22. Adjustable Fixed Speeds Using
Potentiometers in Series