Plastic Omnium Hardware Engineer Interview Questions and Answers

MOSFET selection in SMPs is based on various factors like voltage, current, switching speed, and thermal considerations.

• Consider the maximum voltage and current requirements of the circuit

• Choose a MOSFET with low on-resistance to minimize power loss

• Select a MOSFET with fast switching speed to reduce switching losses

• Ensure proper thermal management to prevent overheating

• Examples of MOSFETs commonly used in SMPs are IRF5

Transistor can be used as a switch by controlling the base current.

• Transistor operates in two modes - cutoff and saturation.

• In cutoff mode, no current flows through the transistor.

• In saturation mode, maximum current flows through the transistor.

• By controlling the base current, we can switch the transistor between these two modes.

• Transistor switches are widely used in digital circuits and power electronics.

Opamp amplifiers are used in various applications such as audio amplification, instrumentation, and signal conditioning.

• Opamp amplifiers are commonly used in audio amplification circuits to increase the amplitude of audio signals.

• In instrumentation applications, opamp amplifiers are used to amplify small signals from sensors or transducers.

• Opamp amplifiers are also used in signal conditioning circuits to filter, rectif...read more