Electronic components are parts of electrical & electronic circuits. Each component has typical functionality according to its operational characteristics.
Electrical and electronic components table
Passive components
Passive components do not need additional power source to operate and can not have gain.
Passive components include: wires, switches, resistors, capacitors, inductors, lamps, ...
Active components
Active components need additional power source to operate and can have gain.
Active components include: transistors, relays, power sources, amplifiers, ...
Currently, we have around 929 calculators and conversion tables to help you "do the math" quickly in areas such as:
- Free online calculators and tools
- Free online units conversion tools
- Free online web design tools
- Free online electricity & electronics tools
- Mathematics
- Online tool
- Text tool
- PDF tool
- Code
- Ecology
- Basic Electrical Terms
- Electrical & Electronic Units
- Electronic Components
- Electrical & Electronic Symbols
- Electronic Circuit Laws
- Resistor
- Capacitor
- Inductor
- DIP switch
- Solder bridge
And we are still developing more. Our goal is to become the one-stop, go-to site for people who need to make quick calculations or who need to find quick answer for basic conversions.
Additionally, we believe the internet should be a source of free information. Therefore, all of our tools and services are completely free, with no registration required. We coded and developed each calculator individually and put each one through strict, comprehensive testing. However, please inform us if you notice even the slightest error – your input is extremely valuable to us. While most calculators on Justfreetools.com are designed to be universally applicable for worldwide usage, some are for specific countries only.