Advanced Power Electronics Devices & Interface Circuits — Summer 2021

State various wide band gap materials and their energy band gap.

State applications of WBG devices.

Compare SiC with Si technology for power devices. State the main advantages of Si over SiC devices, looking to the current developing stage of SiC devices.

Explain the requirement and importance of SC protection in driver circuit.

Explain gate drive requirements of High-Side devices.

Explain any one isolated driver IC for a single switch.

Explain relay driver IC ULN2803.

Explain the principle of frequency measurement.

Explain in brief voltage measurement using Rand C.

Discuss requirement and importance of galvanic isolation for interfacing of signals.

Explain the working principle of hall effect current sensors.

State and explain the application of linear opto-coupler.

Explain Fto Vconverter.

What is meaning of VOH and VOL voltage levels of logic ICs?

Explain the Signal Conditioning.

Write technical note on differential voltage probe.

While using a current probe with DSO is there a physical contact required between the terminal of current probe and the measuring circuit? On which principle does current probe work?

Explain grounding in power circuits.

Explain Power Scope.

Explain why isolation of field signal is required?

Explain the requirement and advantages of isolated channel DSO.

Compare Digital Signal Oscilloscope with Logic Analyser.

Draw the circuit to control fan speed using MOC3002.

Compare CRO with DSO.

Explain the Interfacing of Digital Signals with Different Voltage Levels.