31
MM-PCM Series
Section 6.Application Notes
Replace the speed adjust potentiometer with a series of resistors with a
total series resistance of 10K ohms (Figure 10). Add a single pole, multi-
position switch with the correct number of positions for the desired
number of fixed speeds.
Multiple Fixed Speeds
S3
S2
S1
R1
R2
R4
TOTAL SERIES
RESISTANCE
10K OHMS
R3
Figure 10. Multiple Fixed Speeds
