EE/Hardware Design

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Linear Regulators

Maintains a stable output voltage, even when the input voltage is slightly higher or lower, by minimizing the voltage dropout between the input and output.

Interview Questions

1st Principles

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Switching Regulators

A switching power supply is an electronic device that converts and regulates electrical power by rapidly switching the input voltage on and off to achieve efficient power conversion.

Interview Questions

1st Principles

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Semiconductors

A substance with neutral conductivity that can be doped to behave as a conductors or insulator under certain conditions

1st Principles

Diodes

A diode is a two-lead semiconductor device that acts aa a one-way gate to electric current. 1st Principles

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Where I’ve used them

Interview Questions

Applications

Transistors

Transistors are semiconductor devices that act as either electrically controlled switches or amplifier controls.

Application

Interview Questions

1st Principles

OpAmps

An operational amplifier (op amp) is an electronic device that amplifies and processes analog signals.

1st Principles

Applications

Where I’ve Used Them

Interview Question Answers

Resistors

A resistor is an electrical component that opposes the flow of current, dissipating electrical energy in the form of heat.

Interview Questions

1st Principles

Capacitors

A capacitor stores and releases electrical energy, acting as a temporary reservoir for charge in an electrical circuit.

Interview Questions

1st Principles

Inductors

An inductor stores energy in the form of a magnetic field when current flows through it. It consists of a coil of wire wound around a core.

Interview Questions

1st Principles

DC Motors

Features

Speed Control

RC Servos

Remote control servos are motor-like devices designed specifically for position control applications.

Features

How it Works

Stepper Motors

Steppers are digitally controlled brushless motors that rotate a specific number of degrees every time a clock pulse is applied to a special translator circuit used to control the stepper.

Features

How it Works

Motor Interview Questions

Microcontrollers

A computer on a chip.

Interview Questions

How Does It Work?

SPI (Serial Peripheral Interface)

SPI is a synchronous serial communication protocol, utilizing a master-slave architecture with separate data lines for transmission and reception.

Benefits

Interview Questions

I2C (Inter-Integrated Circuit)

I2C is a synchronous serial communication protocol that enables data exchange between integrated circuits using a shared bus, allowing multiple devices to be connected and controlled by a master device.

Benefits

Interview Questions

PCB Design and Manufacturing Notes

The Process

Design Interview Questions

Manufacturing Interview Questions

Load Cell and Wheatstone Bridge Fundamentals

Strain Gauge

Wheatstone Bridge

Load Cell

Load Cell Signal Output

Wire Sense for Load Cells

What is a Full Bridge Bridge
Bridge Converter
Half Bridge vs Full Bridge
Half Bridge Advantages
Half Bridge Disadvantages
Advantages of Full Bridge
Disadvantages of Full Bridge