**Electrical Concepts**

**Power**

What is Voltage?

What is an Ideal Voltage Source?

What is a Constant Voltage Source?

What is an Ideal Current Source?

What is a Constant Current Source?

What is Open Circuit Voltage?

What is Bias Voltage?

What is Negative Voltage?

What is an Electric Current?

How Can You Create Low Voltage But High Current?

Why are Sine Waves So Used and Important?

What is a Kilowatt (KW)?

What is a Kilowatt Hour (KWh)?

RMS Voltage and Current- Explained

What is Peak Voltage?

What is Peak-to-Peak Voltage (V_{PP})?

How to Increase Voltage in a Circuit

How to Reduce Voltage with Resistors

How to Obtain Negative Voltage from a DC Power Supply or Battery

How to Read a Digital Voltage in Circuitry

**Power circuits**

Current Divider Circuit

**Circuits to Handle Power**

How to Build an Overvoltage Protection Circuit

How to Build a Transient Voltage Suppressor (TVS) Circuit

**Calculators**

Current Divider Calculator

Resistivity Calculator

Voltage Divider Calculator

Capacitor Voltage Divider Calculator

Voltage RMS Calculator

Peak Voltage (V_{P}) Calculator

Peak to Peak (V_{PP}) Calculator

Potential Energy Calculator

Electric Potential Energy Calculator

Kinetic Energy Calculator

Work Calculator

Ohm's Law Calculator

Power Calculator

**Power for Computers**

How Many Volts Does a USB Port Supply?

How Much Power Does a USB Port Supply?