Owner's manual

22
Application Notes
Multiple xed speeds
Replace the speed adjust potentiometer with series resistors with a total series resistance of
10K ohms (Figure 14). Add a single pole, multiposition switch with the correct number of pos-
tions for the desired number of xed speeds.
S3
S2
S1
TOTAL SERIES
RESISTANCE
10K OHMS
Figure 14. Multiple Fixed Speeds