- Types:
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anode
a positively charged electrode by which electrons leave an electrical device
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base
(electronics) the part of a transistor that separates the emitter from the collector
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cathode
a negatively charged electrode that is the source of electrons entering an electrical device
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collector
the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes
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electron gun
the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
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emitter
the electrode in a transistor where electrons originate
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control grid, grid
an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube
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cold cathode
a cathode that is a source of electrons without being heated
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photocathode
a cathode that emits electrons when illuminated
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plate
the positively charged electrode in a vacuum tube
