Samsung Display Senior Assistant Engineer Interview Questions, Process, and Tips

Positive feedback increases the input signal while negative feedback decreases it.

• Positive feedback amplifies the input signal and can lead to instability.

• Negative feedback reduces the input signal and improves stability and linearity.

• Positive feedback is used in oscillators while negative feedback is used in amplifiers.

• Positive feedback can cause noise and distortion while negative feedback reduces them.

Class A amplifiers have low efficiency but high linearity, while Class B amplifiers have high efficiency but low linearity.

• Class A amplifiers use a single transistor that conducts the entire waveform, while Class B amplifiers use two transistors that each conduct half of the waveform.

• Class A amplifiers have a low crossover distortion, while Class B amplifiers have a high crossover distortion.

• Class A amplifiers are comm...read more

IoT devices are connected to the internet and can communicate with other devices, while embedded systems are standalone and perform specific tasks.

• IoT devices are designed to be connected to the internet and can communicate with other devices through the internet.

• Embedded systems are standalone devices that perform specific tasks and are not designed to be connected to the internet.

• IoT devices are typically more comple...read more

Charge can be transferred through conduction, induction, and friction.

• Conduction: transfer of charge through direct contact

• Induction: transfer of charge through electric fields

• Friction: transfer of charge through rubbing two objects together

• Example: rubbing a balloon on hair causes charge transfer through friction

• Example: touching a charged object to a neutral object causes charge transfer through conduction