om5428 ETC-unknow, om5428 Datasheet - Page 9

• Manufacturer Part Number: om5428
• Description: General Purpose Triggering Circuit
• Manufacturer: ETC-unknow

Fig.3 Typical application of the OM5428 as a static switch for resistive loads. The arrangement gives triggering around the zero crossings of the
mains voltage. The values shown for Rs, Rg, Rz and C1 give a gate current I
Active
Neutral
C1
220 F
16V
230
Vac
R2
500K
R3
500K
Vcontrol = 0-10V
R1
1M
Rz
500K
VR25
DIFFEN
XOUT
SDIS
QC+
QC-
PW
IC+
IC-
t
w
= 100 s typical.
1
2
3
4
5
6
7
8
OM5428
GT
= 50 mA typical at V
16
14
13
15
12
11
10
9
VEE
XDIS
FLY
SAW
RMNS
VCC
TRIG
AMPIN
Rs
100K
VR37
GT
= 1.5 V and a trigger pulse duration
LOAD
T1
Triac
Rg
250