25-08-2017, 09:32 PM
IDENTIFYING ELECTRONIC COMPONENTS
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Electronic component are classed into either being Passive devices or Active devices.
A Passive Device is one that contributes no power gain (amplification) to a circuit or system. It has not control action and does not require any input other than a signal to perform its function. In other words, “A components with no brains!” Examples are Resistors, Capactitors and Inductors
Active Devices are components that are capable of controlling voltages or currents and can create a switching action in the circuit. In other words, “Devices with smarts!” Examples are Diodes, Transistors and Integrated circuits. Most active components are semiconductors.Inductors:
You may remember from science class that adding electrical current to a coil of wire produces a magnetic field around itself. This is how the inductor works. It is charged with a magnetic field and when that field collapses it produces current in the opposite direction.
Inductors
are used in Alternating Current circuits to oppose changes in the existing current. Most inductors can be identified by the "coil" appearance. Others actually look like a resistor but are usually green in color.
A. Air Core, B. Iron Core, C. Powered Metal Core.
[attachment=64577]
Electronic component are classed into either being Passive devices or Active devices.
A Passive Device is one that contributes no power gain (amplification) to a circuit or system. It has not control action and does not require any input other than a signal to perform its function. In other words, “A components with no brains!” Examples are Resistors, Capactitors and Inductors
Active Devices are components that are capable of controlling voltages or currents and can create a switching action in the circuit. In other words, “Devices with smarts!” Examples are Diodes, Transistors and Integrated circuits. Most active components are semiconductors.Inductors:
You may remember from science class that adding electrical current to a coil of wire produces a magnetic field around itself. This is how the inductor works. It is charged with a magnetic field and when that field collapses it produces current in the opposite direction.
Inductors
are used in Alternating Current circuits to oppose changes in the existing current. Most inductors can be identified by the "coil" appearance. Others actually look like a resistor but are usually green in color.
A. Air Core, B. Iron Core, C. Powered Metal Core.
![[Image: numberedboard.jpg]](http://www.uchobby.com/wp-content/uploads/2007/07/numberedboard.jpg)