Electronics Area – Electrical and Electronics Tutorials and Circuits
Welcome to Electronics Area
Electrical and Electronics Tutorials and Circuits
Recent posts
Lie Detector Circuit Using Two Transistors
This simple lie detector consists of two transistors and other additional components and can detect if a person does not tell the truth (the person is lying), using two sensors placed directly on the skin.
How to use op amps with a single rail power supply?
How to use op amps with a single rail power supply?
Method #1: Voltage divider using two resistors. Method #2: Voltage divider using two Zener diodes.
Superposition Theorem – Example
The Superposition Theorem
The Superposition theorem states that the effect of two or more voltage sources in a resistor is equal to the sum of the individual effects of each source taken separately, replacing all the remaining voltage sources with short circuits.
What is Electrical Resistance? Obtaining a material’s resistance
The electrical resistance is a measurement of the opposition that offers a material to the passage of electrons (the electric current)
Semiconductor Diode – Bias – Operation – Diode Types
The semiconductor diode is the simplest semiconductor device and can be found in almost any electronic circuit. Diodes are manufactured with germanium and silicon (the most common).
How to make a Police Style Strobe Light Circuit?
This circuit shows the familiar lights which are used on police cars. It uses a 555 timer as a clock for the 4017B decade counter, two transistors and twelve LEDs
Second Right-Hand Rule – Electromagnetism
Second Right-Hand Rule. When a current flows through a conductive wire, a non-visible effect called the electromagnetic field is generated around it.
How to test Diodes and How to test Transistors using Multimeter?
Method to follow to test a diode or transistor to know if it is working properly
Impedance of a capacitor – Capacitive reactance
The Impedance of a capacitor (Capacitive reactance) is the measure of the opposition to a change of the electrical current in this component.
FET Characteristics (N-channel JFET)
FET characteristics
The N-channel JFET consists of a silicon bar of N-type semiconductor with two P type regions on both sides. JFET is a tri-terminal device whose terminals are called drain, source and gate.
First Right Hand Rule
The First Right-hand Rule or (Magnetic Force induced on a Current-Carrying Wire) says that if a current-carrying wire is in the presence of a magnetic field, a force is exerted on the wire.
RC Low Pass Filter
An RC low pass filter allows only the passage of frequencies below the cut-off frequency (Fc) and eliminates frequencies above this frequency.