Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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JFET Cutoff and Linear regions
JFET Cutoff and Linear regions JFET Cutoff region In this region the current flowing from the Drain to the Source terminals of the JFET is zero (ID = 0). In this case, the voltage between…
Microwave Oven History
Microwave Oven History The microwave oven was discovered in 1947 by Percy Spencer. Mr. Percy Spencer, an engineer of the Raytheon Company, was carrying in his jacket pocket a bar of…
What is a Binary Decoder?
The binary decoder is a device that accepts a digital input (in binary form) and it activates one of its outputs. This device has several outputs, and the one that is activated is chosen by the code applied to the inputs.
What is a Logic Circuit?
A Logic circuit uses two logic levels to transfer the information. A high logic level or “1” and a low logic level or “0”. The Logic circuits are made of digital elements such as the AND gate, the OR gate, the NOT gate and a combinations of them.
Polarization of a conducting material
If an electric field is close to a metallic body, part of it is positively charged and other part negatively charged
Electric Field – Lines of Force – Electric Field Unit
If a charge Q is affected by an electrostatic force, there is an electric field. If at some point the electric field is known, we can find the electrostatic force on a charge Q at that point
Positive and Negative Charges – (electrons, protons, neutrons)
If a body has more electrons than protons, it is negatively charged. If it has more protons than electrons it is positively charged
Norton’s Theorem
Norton’s Theorem The Norton’s Theorem is similar to the Thevenin’s Theorem. It can be seen that, the equivalent circuit is: A Voltage source (Thevenin voltage: Vth) in series with a resistor (Thevenin resistance: RTH) Thevenin…
Thevenin’s theorem
The Thevenin’s theorem is used to convert a two terminal circuit, into a very simple circuit containing one voltage source in series with a single resistor
Electric Current Definition
Electric Current Definition The electric current is a current of electrons that crosses a material. Some conductive materials have free electrons that easily pass from an atom to another. These free electrons,…
Multimeter – VOM – Tester
This tool is known as a VOM, although there are multimeters that can measure many other quantities.
Electric Conductors (wire – cables)
Electric Conductors: General characteristics The electric conductors are metal threads (copper or aluminum) that are used to conduct electric current. Electric conductors are used in: – Electric facilities (housing, industry, trade, etc.) – Car…