. Along with this current, a capacitor charging current flows from battery through load 2, capacitor C, and thyristor T1. This current charges capacitor C, to the battery voltage V with the right side plate of the capacitor positive.
Prepared By Engr. Shahzeb Ansari Mode 2: A gate is applied to thyristor T2that turns it on. The capacitor voltage now appears as reverse bias across T1 and turns it off. In this mode, load current flows from battery to load 2 through thyristor T2. In addition, a charging current flows from battery through load 1, capacitor C, and T2. This charging current charges the capacitor to supply voltage V with polarity such that for fig: 2.1, the right side plate is negative. When thyristor T1 is tuned on in the next cycle, the voltage across C reverse biases thyristor T2and turns it off. The above cycle of events is repeated. This method of commutation is used in inverters. The circuit turn-off time is given by toff= R1CCIRCUIT DIAGRAM: The circuit diagram is shown in following figure. Figure 2.2 Circuit Schematic of Complementary Commutation
Prepared By Engr. Shahzeb Ansari OBSERVATION TABLE: S.No Vs (Supply Voltage) Voltage across R1 Voltage across C Voltage across R2 1.5V 2.10V 3.12V 4.15V 5.18V ACTIVITY: Develop the above circuit on the breadboard.