Data Sheets
Sidac
SCR
Sidac
100
2W
-
10
µF
+
Xenon Lamp
250 V
K2200G
20 M
100-250 V ac
60 Hz
100-250 V ac
60 Hz
+
10
µF
-
450 V
120 V ac
60 Hz
4 kV
Sidac
200-
400 V
Trigger
Transformer
20:1
0.01
µF
400 V
Figure E9.9 Comparison of Sidac versus SCR for Gas Ignitor Circuit
Figure E9.12 Xenon Lamp Flashing Circuit
Push to test
4.7
µF
10
µF
100 V
S1
4.7 k
Switch to test
in each direction
-
+
-
50 V
+
½W
100-250 V ac
60 Hz
K1200E
Sidac
200 V
100
Ω
1%
Device
Under
Test
+
-
24 V ac
60 Hz
4.7
µF
100 V
1.2
µF
S1
Scope
I
PK
Trace Stops
H.V.
Ignitor
I
H
Scope Indication
Figure E9.10 Circuit (Low Voltage Input) for Gas Ignition
Figure E9.13 Dynamic Holding Current Test Circuit for Sidacs
Ballast
Ballast
Sidac
3.3 k
0.47
µF
400 V
Lamp
Sidac
7.5 k
0.22
µF
Lamp
100-250 V ac
60 Hz
V
BO
V
BO
V
BO
I
H
Load
I
H
120 V ac
60 Hz
16 mH
220 V ac
60 Hz
120-145
Conduction
Angle
˚
I
H
Load Current
120 V ac
220 V ac
Figure E9.11 Typical High Pressure Sodium Lamp Firing Circuit
Figure E9.14 Basic Sidac Circuit
©2004 Littelfuse, Inc.
Thyristor Product Catalog
E9 - 5
http://www.littelfuse.com
+1 972-580-7777
LITTELFUSE [ LITTELFUSE ]
