AC Switching With TrIAC From TTL:

CMOS Gate implements Reverse Phase Control: 05/21/98 EDN-Design Ideas

LED Flasher & TrIAC Pulser Work off AC Line: 01/15/98 EDN-Design Ideas

TRIAC Light Dimmer #3: This little circuit can be used to dim lights up to about350-Watts. It uses a simple, standard TRIAC circuit that, in my experience, generates very little heat. Please note that this circuit cannot be used with fluorescent lights.

TRIAC Light Dimmer: dim115-Volt lights up to about350-Watt