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Definition of "Cathode" |
Negative electrode. The element of an electronic device that provides the flow of electrons. / The general name for any negative electrode. The negative terminal of a forward-biased semiconductor diode, which is the source of the electrons. The electrode to which the forward current flows within the device. In an electron tube the electrode that is the source of current flow. / The negative electrode, that emits electrons or gives off negative ions and toward which positive ions move or collect in a voltaic cell or other such device. The negative pole of a battery. / A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition is sometimes remembered using the mnemonic CCD for cathode current departs. A conventional current describes the direction that positive electronic charge move. have a negative charge, so the movement of electrons is opposite to the conventional current flow. / the negative terminal electrode of a device. The "N" material in a junction diode. |
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