Along with this current a capacitor charging current flows from battery through

Along with this current a capacitor charging current

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. Along with this current, a capacitor charging current flows from battery through load 2, capacitor C, and thyristor T 1 . This current charges capacitor C, to the battery voltage V with the right side plate of the capacitor positive.
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Prepared By Engr. Shahzeb Ansari Mode 2: A gate is applied to thyristor T 2 that turns it on. The capacitor voltage now appears as reverse bias across T 1 and turns it off. In this mode, load current flows from battery to load 2 through thyristor T 2 . In addition, a charging current flows from battery through load 1, capacitor C, and T 2 . 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 T 1 is tuned on in the next cycle, the voltage across C reverse biases thyristor T 2 and 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 t off = R 1 C CIRCUIT DIAGRAM: The circuit diagram is shown in following figure. Figure 2.2 Circuit Schematic of Complementary Commutation
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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.
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  • Fall '18
  • Rashid Baloch

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