
32
MMRG Series
CW
CW
5K
OHM
5K
OHM
HIGH
SPEED
LOW
SPEED
S0
S2
S1
Figure 18. Adjustable Speeds Using Potentiometers In Series
Replace the speed adjust potentiometer with a series of resistors with a
total series resistance of 10K ohms (Figure 18). Add a single pole, multi-
position switch with the correct number of positions for the desired
number of fixed speeds.
Adjustable Speeds Using Potentiometers In Series