©2004 Littelfuse, Inc.

E9 - 5

http://www.littelfuse.com

Thyristor Product Catalog

+1 972-580-7777

Data Sheets

Sidac

Figure E9.9 Comparison of Sidac versus SCR for Gas Ignitor Circuit

Figure E9.10 Circuit (Low Voltage Input) for Gas Ignition

Figure E9.11 Typical High Pressure Sodium Lamp Firing Circuit

Figure E9.12 Xenon Lamp Flashing Circuit

Figure E9.13 Dynamic Holding Current Test Circuit for Sidacs

Figure E9.14 Basic Sidac Circuit

100-250 V ac

60 Hz

100-250 V ac

60 Hz

SCR

Sidac

4.7

µF

100 V

10

µF

50 V

24 V ac

60 Hz

4.7

µF

100 V

½ W

K1200E

Sidac

200 V

H.V.

Ignitor

1.2

µF

4.7 k

-

+

-

+

+

-

Sidac

120 V ac

60 Hz

16 mH

3.3 k

0.47

µF

400 V

Ballast

Sidac

220 V ac

60 Hz

7.5 k

0.22

µF

Ballast

Lamp

120 V ac

220 V ac

Lamp

-

+

+

-

Xenon Lamp

K2200G

10

µF

2 W

120 V ac

60 Hz

10

µF

450 V

4 kV

0.01

µF

400 V

20 M

Sidac

200-

400 V

100

250 V

Trigger

Transformer

20:1

100-250 V ac

60 Hz

Scope

Push to test

S1

Switch to test

in each direction

100

Ω

1%

Device

Under

Test

S1

Scope Indication

Trace Stops

Load

100-250 V ac

60 Hz

Conduction

Angle

Load Current