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®@ Stroboscope Pulse Circuit
® Reverse Rotation Prevention
3. This reverse
torque
will further accelerate the
turntable
rotation in the reverse direction. This
is known as "'reverse run-away."'
6. The
input
for this circuit is derived
from the
Hall element position detection signals processed
in the Reverse Rotation Prevention circuit.
FR;
AND
FRa
©
Output
|
Forced Forward
i
Rotation at 0 output
Fig. 21
PL-GS3O
Truth table
mand Circuit
vw
we
Area of 5} Area of
Ss
S> reverse
©
oO
ey, torque
3] torque
_¢
%
a)
es
Ss
5
$
ra
Nv,
8
oO
+
9 Input voltage differential between
V18... Voltage at pin (18)
pins (18) and (19)
V19...
Voltage at pin (19)
Fig. 22
AA
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