Data Sheets
Sidac
Xenon Lamp
100
2 W
10 µF
SCR
Sidac
-
+
250 V
20 M
K2200G
4 kV
+
-
100-250 V ac
60 Hz
100-250 V ac
60 Hz
10 µF
450 V
Sidac
120 V ac
60 Hz
0.01 µF
400 V
200-
400 V
Trigger
Transformer
20:1
Figure E9.9 Comparison of Sidac versus SCR for Gas Ignitor Circuit
Figure E9.12 Xenon Lamp Flashing Circuit
Push to test
S1
Switch to test
in each direction
4.7 µF
-
+
4.7 k
½ W
10 µF
100 V
100-250 V ac
60 Hz
Device
Under
Test
-
+
100 Ω
1%
K1200E
Sidac
50 V
+
-
4.7 µF
100 V
200 V
1.2 µF
S1
24 V ac
60 Hz
Scope
IPK
Trace Stops
IH
H.V.
Ignitor
Scope Indication
Figure E9.10 Circuit (Low Voltage Input) for Gas Ignition
Figure E9.13 Dynamic Holding Current Test Circuit for Sidacs
Ballast
Ballast
VBO
VBO
0.47 µF
400 V
Sidac
Sidac
0.22 µF
VBO
Lamp
3.3 k
7.5 k
100-250 V ac
60 Hz
Lamp
IH
Load
IH
IH
120 V ac
60 Hz
220 V ac
60 Hz
120-145
˚
Conduction
Angle
16 mH
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 ]
