Electronics Area – Electrical and Electronics Tutorials and Circuits
Welcome to Electronics Area
Electrical and Electronics Tutorials and Circuits
Recent posts
Event Sequencer Using 555 Timer
Event Sequencer Using 555 Timer
This event sequencing circuit uses several 555 timer to control an event sequence, where an event does not start if the previous event has not ended.
Heat control using thermistor and TRIAC
Heat control using thermistor and TRIAC
This Heat control using thermistor and TRIAC circuit, is designed to control the temperature of a room, either by using a heat source such as an electric oven heating element or by using a fan or any cooling device
Pulse generator using NAND gate
Pulse generator using NAND gate. This circuit can be used as a clock for other circuits. The circuit’s main element is a 2 input (Schmitt Trigger) NAND gate
Types of Cells / Batteries
Types of cells / batteries. Primary batteries (non-rechargeable): Dry, mercury, alkaline. Secondary batteries (rechargeable): Nickel-Cadmium Alkaline, Lead
How does a battery work?
The electric current is a flow of electrons that flow through a conductor cable. Electrons are negatively charged, and like two magnets that we want to put together, negative side with negative side or positive side with positive side, they repel.
Step Response of RL Circuits
When a constant voltage is suddenly applied to an RL circuit, an increasing a current goes through the conductor and creates a magnetic field that expands with the increasing current
Inductor in DC and AC. Quality factor
Inductor in direct current (DC) and alternating current (AC). Phase angle of the alternating current in an Inductor, The quality factor (Q)
Electricity and structure of matter
The matter is divided into molecules, which in turn are divided into atoms. These atoms are composed of two parts: nucleus and periphery.
What is an electric charge?
The electron (or proton, since they have the same charge) is the basic unit of electric charge. We can therefore consider the electron as the elementary unit of electric charge.
What is a radian? – Angular frequency (video)
What is a radian?
The radian is the angle that cover the portion of the circumference which is equal to the length of the radius of the circle
Boolean Algebra – Introduction and Rules
Boolean Algebra is a tool to reduce logical expressions. It is the mathematics of logical expressions, which was presented by George Boole in 1854.
Crystal Oscillators – Piezoelectric Oscillator. Equivalente circuit
The Crystal Oscillators (Piezoelectric Oscillator) A quartz crystal has a property called: piezoelectric effect. This effect causes, by applying a mechanical pressure on the surface of the crystal, that a voltage is developed…