Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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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
Voltage, Current and Power Gain on an Amplifier
Voltage, Current and Power Gain on an Amplifier Voltage Gain (Δv) The voltage gain is obtained by dividing the output by the input voltage. Δv = Vout / Vin. For example: If…
Decibel – Power, Voltage and Current gains
Decibel The decibel expresses a ratio of quantities and not a quantity by itself. it does not express an exact quantity. The decibel expresses how many times more or how many times less,…
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
Multimeter – VOM – Tester The Multimeter also knowned as Tester and VOM. VOM comes from Volts, Ohms, Milliampere, although there are multimeters capable of measuring many other magnitudes as capacitance, frequency, temperature,…
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…
Optocoupler (LED and phototransistor)
Optocoupler: LED and phototransistor The Optocoupler is a device that consists of a LED (light-emitting diode) and a phototransistor. When the LED emits light, it illuminates the phototransistor causing a current to flow through it. These two elements are coupled in the…
LED – Light-emitting diode
LED – Light-emitting diode Light-emitting diode (LED) is a special type of diode, that emits light when it is forward biased. There are LEDs of various colors. LED colors depend on the material…
What is a Capacitor?
Capacitors are devices made of two metal plates separated by an insulator or dielectric. Charge, Voltage and Capacitance Relationship