om5428 ETC-unknow, om5428 Datasheet - Page 11
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om5428
Manufacturer Part Number
om5428
Description
General Purpose Triggering Circuit
Manufacturer
ETC-unknow
Datasheet
1.OM5428.pdf
(16 pages)
Fig.5 Typical application of the OM5428 as a single-phase control circuit. The circuit produces a trigger pulse at the gate of the triac. The pulse
is produced when the voltage on pin IC- (related to mains zero crossing) becomes greater than the control voltage. The arrangement forms a
Active
Neutral
C1
220µF
16V
230
Vac
R3
1MΩ
R1
1MΩ
C2
5nF
Vcontrol
Rz
500KΩ
VR25
DIFFEN
full-wave AC controller.
XOUT
SDIS
QC+
QC-
PW
IC+
IC-
1
2
3
4
5
6
7
8
OM5428
16
15
14
13
12
11
10
9
XDIS
FLY
SAW
RMNS
VCC
VEE
TRIG
AMPIN
R2
300KΩ
C3
5nF
Rs
100KΩ
VR37
LOAD
T1
Triac
Rg
250Ω