Daewoo DSB-181LH Service Manual - Triac Driving (7)
Other manuals for DSB-181LH:
Owner's Manual, Owner's Manual
of
55
38
DESCRIPTION
Number 38 Terminal of Micom is put out Pulse Output, by way of Buffer it is driving Photo Triac K3021PG and
then Triac SM3JZ47 is supplied Trigger Signal.
Trigger Test of Triac is detected Zero Cross Part of AC input and it is triggered from Zero Cross part to Time
delay part according to Fan Speed. (Ref. Fig 7-1) SN1 is Snubber.
MICOM
38
KID 65004
R4
1K
12V
1
2
TLP560J
R5 100
L1
SN1
0.1
µ
F+120
TRIAC
SM3
JZ47
TO MOTOR
L AC220V
Triac Driving (7)
AC220V
TRIGGER
MOTOR
INPUT
LOW SPEED
MEDIUM SPEED
HIGH SPEED
Fig 7-1