– 90 –
11.Drive circuit
Fig. 11-1 shows the drive circuit.
The circuits for U phase, V phase and W
phase have the same Configuration.
●
Fig11-2, 0 to 5V chopper signal is output from microcomputer for each phase. The signal output from microcomputer is input to I
C, inverted
due to active LO, and 0 to 15V chopper signal is obtained. This signal is then applied to transistor gate of each phase to driv
e.
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