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Capacitors & Transistors

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Why Buy Capacitors & Transistors?


Capacitors are often used to build various electronic circuits. A capacitor is a passive electrical component. It has two connections. A capacitor can store electrostatic energy in an electric field. This sounds quite complicated, but you can best compare it with a small battery. However, capacitors can be charged and discharged in a fraction of a second. Capacitors come in all shapes and sizes. The capacitance of a capacitor is measured in farad. The voltage of the capacitor is in volts.


Transistors are semiconductor components with usually three terminals. In electronic circuits they are often used as amplifying or switching element. A transistor can be compared to a relay. They can switch something on or off. However, there are no moving parts in a transistor. As said before, a transistor usually has three connections. These connections are: The emitter, the collector and the base.


A triac is an electronic alternating voltage switch. It is an electronic component belonging to the semiconductor switch category. A triac has three connections, namely: electrode 1, electrode 2 and one gate. There is no fixed polarity as with a thyristor. The operation of a Triac is very similar to that of a thyristor. By using a triac you can make a mains voltage regulation for various loads.

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