TRIAC (Triode for Alternating Current): A bidirectional thyristor that can conduct in both directions, commonly used in AC power control applications such as light dimmers, fan speed controllers, and domestic appliances., Semiconductors where two anti-parallel high power thyristors are integrated onto one single silicon wafer and are assembled into one housing. They serve as rectifiers, dc power converters, and motor controllers, and you will often find them in circuitry for ac motors, light dimmers, thermostats, and tankless. TRIAC stands for Triode for Alternating Current, specifically an AC three-terminal bidirectional thyristor. It is a semiconductor device capable of conducting current during both phases of an AC cycle (positive and negative half-cycles), making it particularly suitable for dimming and speed control. The most recognized type is the Silicon Controlled Rectifier (SCR), ideal for circuits requiring precise control of power, particularly in unidirectional and high-power environments. There are four main types of thyristors, each suited to specific applications: SCR (Silicon Controlled Rectifier): A. Because a bidirectional thyristor has symmetrical volt-ampere characteristics in the 1st and 3rd quadrants, and both positive and negative trigger pulse signals at the gate can trigger conduction, there are four trigger modes.
