Ans: Applications of GTO: (Any two) Variable speed motor drives. High power inverter. Traction. DC drives or DC choppers. AC drives. AC stabilizing power supplies. Induction heater. …
Explain with the characteristics the effect of gate current on break over voltage of SCR.
Ans: Effect of gate current on break over voltage of SCR: Explanation: The voltage at which the SCR comes into conduction without any gate current (Ig=0) is called break over voltage VBO. By t…
Describe the operation of PUT as relaxation oscillator.
Ans: PUT Relaxation oscillator: Waveforms of PUT relaxation oscillator Operation: As the biasing voltage Edc is applied to the circuit , capacitor starts charging towards Edc voltage through resis…
Explain with sketch the operation of power MOSFET.
Ans: Circuit diagram: (Structure of power MOSFET as shown below or any other equivalent can be considered ) V-I characteristics: Operation: Figure 1 shows the construction of N – channel power MOS…