Electronics Area

MOSFET Transistors – NMOS, PMOS

Marcel — Thu, 28 May 2026 21:00:45 +0000

MOSFET transistors, or Metal Oxide-Semiconductor (MOS), are field effect devices that use the electric field to create a conduction channel. MOSFET transistors are more important than JFETs because almost all integrated circuits are built with MOS technology.

The post MOSFET Transistors – NMOS, PMOS first appeared on Electronics Area.

The post MOSFET Transistors – NMOS, PMOS appeared first on Electronics Area.

LM317 Variable Voltage Regulator Tutorial

Marcel — Mon, 25 May 2026 17:28:51 +0000

LM317 characteristics. How the voltage regulator circuit works: Regulator circuit operation improvement

The post LM317 Variable Voltage Regulator Tutorial first appeared on Electronics Area.

The post LM317 Variable Voltage Regulator Tutorial appeared first on Electronics Area.

Adding a Tweeter to a Speaker

Marcel — Mon, 25 May 2026 17:26:50 +0000

How to add a tweeter to a speaker. Very simple circuit, using only one potentiometer and two capacitors, very easy to install.

The post Adding a Tweeter to a Speaker first appeared on Electronics Area.

The post Adding a Tweeter to a Speaker appeared first on Electronics Area.

5 to 30 Minute Timer Circuit using 7555 IC

Marcel — Fri, 22 May 2026 15:03:01 +0000

This 5 to 30-minute timer circuit achieves times ranging from 5–30 minutes using the 7555 integrated circuit (CMOS version of the popular 555 timer).

The post 5 to 30 Minute Timer Circuit using 7555 IC first appeared on Electronics Area.

The post 5 to 30 Minute Timer Circuit using 7555 IC appeared first on Electronics Area.

Coulomb’s Law – Electrostatic Force – Formula – Example

Marcel — Thu, 21 May 2026 22:09:03 +0000

Coulomb's Law—Electrostatic Force: Formula and example. Learn how to calculate the electrostatic force between 2 electric charges using Coulomb's Law.

The post Coulomb’s Law – Electrostatic Force – Formula – Example first appeared on Electronics Area.

The post Coulomb’s Law – Electrostatic Force – Formula – Example appeared first on Electronics Area.

Structure of Matter: The Bohr Atom and the Electricity

Marcel — Thu, 21 May 2026 16:33:21 +0000

Structure of Matter: The Bohr Atom and Electricity. The atom, the electron. Positive and negative ions. How free valence electrons become electricity

The post Structure of Matter: The Bohr Atom and the Electricity first appeared on Electronics Area.

The post Structure of Matter: The Bohr Atom and the Electricity appeared first on Electronics Area.

Electric Field: Lines of Force and Electric Field Unit

Marcel — Thu, 21 May 2026 15:29:40 +0000

If the electric field at a given point is known, the electrostatic force on a charge Q at that point can be found. If a charge Q is subject to an electrostatic force, an electric field exists.

The post Electric Field: Lines of Force and Electric Field Unit first appeared on Electronics Area.

The post Electric Field: Lines of Force and Electric Field Unit appeared first on Electronics Area.

Gray code – Gray code Table

Marcel — Thu, 21 May 2026 13:29:07 +0000

The Gray code is an unweighted code. Between any combination of digits and the next one, there is only a difference of one digit. Gray code Table

The post Gray code – Gray code Table first appeared on Electronics Area.

The post Gray code – Gray code Table appeared first on Electronics Area.

Voltage Drop Alarm Circuit: Useful for PS testing

Marcel — Tue, 19 May 2026 13:46:23 +0000

This voltage drop alarm is very useful for power supply monitoring or testing. It activates a buzzer when the test voltage drops below a reference voltage.

The post Voltage Drop Alarm Circuit: Useful for PS testing first appeared on Electronics Area.

The post Voltage Drop Alarm Circuit: Useful for PS testing appeared first on Electronics Area.

Surge Protection Circuit (Voltage Delay Circuit)

Marcel — Tue, 19 May 2026 12:08:57 +0000

This surge protection circuit is placed between the DC voltage source and the circuit that you want to power. This circuit delays the voltage given by the power source and allows the voltage to be applied to the circuit or device a few moments later.

The post Surge Protection Circuit (Voltage Delay Circuit) first appeared on Electronics Area.

The post Surge Protection Circuit (Voltage Delay Circuit) appeared first on Electronics Area.