Page 1007 - Basic Electrical Engineering
P. 1007
Figure 14.44 (a) Construction and symbol of TRIAC; (b) V–I characteristics of a TRIAC
Figure 14.45 (a) Phase control circuit using a TRIAC; (b) input and output voltage waveforms
TRIAC phase-control circuit
The circuit for control of ac voltage using a TRIAC has been shown in Fig.
14.45 (a). From a fixed input ac voltage, a variable ac voltage can be made
available across the load. The triac will control the voltage in either direction,
