C5 C4 102/1000V X 2 4 D3 IN4148 FI VDD VSS NC 6 CK AT 8 7 LAMP M C2 O03/50V TRIAC 97A6 R4 10K VDD TI CI 5 C3 R5 1.0U/16V 10M R1 110V 20K/2W R2 510K-620K R3 110V 2.2M TRIAC 97A6 LAMP 60W 4/4 .