Phase Angle Controller Circuit for Triac-based Single-phase AC Regulator
Phase Angle Controller Circuit for Triac – based single – phase AC regulator:
Fig: Phase angle controller circuit for a single-phase ac regulator using TRIAC
Fig: A bi-directional conducting TRIAC
- The phase angle controller circuit for a triac-based single-phase ac regulator (ac to ac voltage converter. The power circuit of a bi-directional conducting TRIAC consists of a Triac in series with inductive (R-L) load, fed from a single phase supply, with rated voltage of, say 220 V(rms), having rated frequency (=f50 Hz).
- Before going into the operation of the phase angle controller circuit, some important points of the bidirectional controlled device (TRIAC), used in the ac circuit.
- Similarly, for the same reasons, DIAC, being used here as an uncontrolled bidirectional device.