Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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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
2-LED Temperature Change Indicator with LM35 & 741
This circuit shows us, by means of 2 LEDs, when the sensed temperature is above or below a set limit. When the temperature is above the preset temperature level, LED D1 will light up, and if it is below, LED D2 will light up.
Internal Resistance of a Voltage Source. What is it?
Voltage sources, whether batteries, generators, etc., are not ideal (perfect). A real voltage source is composed of an ideal voltage source in series with a resistance called internal resistance.
ON-OFF Switch circuit using a 555 timer (PCB)
This circuit has many applications on places where it is necessary to activate and deactivate (connect and disconnect) an electrical or electronic device.
Capacitor – Charge, Voltage & Capacitance
The capacitor is a device made of 2 metal plates separated by a dielectric material. The charge, voltage, and capacitance relationship. Measurement units