Noun | 1. | ![]() anode - a positively charged electrode by which electrons leave an electrical device base - (electronics) the part of a transistor that separates the emitter from the collector electric battery, battery - a device that produces electricity; may have several primary or secondary cells arranged in parallel or series cathode - a negatively charged electrode that is the source of electrons entering an electrical device collector - the electrode in a transistor through which a primary flow of carriers leaves the region between the electrodes conductor - a device designed to transmit electricity, heat, etc. electrolytic cell - a cell containing an electrolyte in which an applied voltage causes a reaction to occur that would not occur otherwise (such as the breakdown of water into hydrogen and oxygen) 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 electronic equipment - equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor) emitter - the electrode in a transistor where electrons originate control grid, grid - an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, vacuum tube, tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |