For the single phase AC phase control circuit with the connection diagram below and the trigger signal given by input voltage; a) Draw the voltage waveforms on the triac and charge. b) Effective value of the voltage on the load calculate. 1- cos 21 Alfa (V sinwt) dwt , (sin t)* = eff 2 V Vseb Ryuk Vseb 300.00 200.00 100.00 0.0 -100.00 -200.00 -300.00 alfa 1.00 0.80 0.60 0.40 0.20 0.0 0.0 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50 30.00 32.50 35.00 37.500.00 Time (ms)