Thyristor Semiconductor Products Page 86 Thyristor

2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/14/14 Teccor brand Thyristors AN1010 Figure AN1010.4 240 V ac Triac/DIAC Circuit Figure AN1010.4 shows a circuit for igniting a fluorescent lamp with 240 V line voltage input using Triac and DIAC networks. Lamp 40 W 3.3 F 240 V ac Line Input K2400E SIDAC K2400E SIDAC Charging Network Ballast 1N4004 47 k Figure AN1010.5 240 V ac SIDAC Circuit Figure AN1010.5 illustrates a circuit using a SIDAC phase control network to ignite a 240 V ac fluorescent lamp. This circuit works basically the same as the 120 V circuit shown in Figure AN1010.3, except that component values are changed to compensate for higher voltage. The one major change is that two K2400E devices in series are used to accomplish high firing voltage for a fluorescent lamp. 240 V ac Line Input Lamp 40 W Charging Network 3.3 F 0.047 F 50 V 470 k D-30A MT1 G MT2 Q601E4 Ballast 47 k 1N4004 Thyristors for Ignition of Fluorescent Lamps (continued)

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