KA8328 データシートの表示（PDF） - Fairchild Semiconductor

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KA8328

2-PHASE DRUM MOTOR DRIVER

Fairchild Semiconductor 

KA8328D

VCR PRODUCTS

6.OUT (Driver) has the function of driving the motor through amplifying the driving current to a proper level.

Freewheeling diode is designed at the C-E terminal of each TR, and protect the TR by making the motor current

freewheeling when the TR is turned off.

The motor current is kept constant through being detected by the resistance (R3) and returned as feedback again

via the Feedback circuit. Accordingly the motor rotative velocity is also kept constant.

12

Q9

Q10

A phase

13

Q11

14

Q12

R3

AMP &

Feedback

10

MIC-99D001

January 1999

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