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Capacitors (also
called condensers)
A capacitor is a component which stores
electric charge. The unit of capacitance is the Farad.
However, 1 F is a very large capacitance. In most situations
we use capacitors in the micro-Farad (µF) or nano-Farad (nF)
range. Many capacitors can be connected either way but
electrolytic capacitors (and some other types) are said
to be polarised and must be connected the right
way round. Nearly all "large" capacitors (greater than
about 1 µF are electrolytic). Circuit symbols for capacitors
are shown below.
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