Q.Draw the Schematic symbol of TRIAC and explain its terminals.

A TRIAC is a three-terminal bidirectional device whose symbol is two SCR-like triangles connected in inverse parallel, with terminals MT1, MT2 and gate G. …

[!TLDR]

The TRIAC symbol is two inverse-parallel triangles (like two SCRs back to back) with terminals MT1, MT2 and gate G; it conducts in both directions.

The TRIAC (triode for alternating current) is a three-terminal bidirectional power semiconductor switch. Its schematic symbol is drawn as two triangles pointing in opposite directions and connected in inverse parallel (equivalent to two SCRs joined back to back), with a gate lead brought out.

Its three terminals are:

• Main Terminal 1 (MT1): the reference terminal, with respect to which the gate voltage and MT2 voltage are measured.
• Main Terminal 2 (MT2): the other main current-carrying terminal.
• Gate (G): the control terminal; a gate pulse triggers the TRIAC into conduction. …