Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
Recent posts
MOSFET Transistors – NMOS, PMOS
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.
LM317 Variable Voltage Regulator Tutorial
LM317 characteristics. How the voltage regulator circuit works: Regulator circuit operation improvement
Adding a Tweeter to a Speaker
How to add a tweeter to a speaker. Very simple circuit, using only one potentiometer and two capacitors, very easy to install.
5 to 30 Minute Timer Circuit using 7555 IC
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).
Coulomb’s Law – Electrostatic Force – Formula – Example
Coulomb’s Law—Electrostatic Force: Formula and example. Learn how to calculate the electrostatic force between 2 electric charges using Coulomb’s Law.
Structure of Matter: The Bohr Atom and the Electricity
Structure of Matter: The Bohr Atom and Electricity. The atom, the electron. Positive and negative ions. How free valence electrons become electricity
Electric Field: Lines of Force and Electric Field Unit
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.
Gray code – Gray code Table
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
Voltage Drop Alarm Circuit: Useful for PS testing
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.
Surge Protection Circuit (Voltage Delay Circuit)
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.
Battery Monitor Circuit using 4 LEDs for a car
This simple car battery monitor allows us to know the voltage of the battery at all times. To achieve this, 4 LEDs are placed somewhere on the dash of the car. Each LED has a label indicating the battery voltage at that time.
Scientific Notation – Engineering Notation
Scientific notation and engineering notation allow the representation of very large or very small quantities, very common in engineering and technical fields