تایترون

thumb|upright|Giant General Electric|GE hydrogen thyratron, used in pulsed [[radars, next to miniature 2D21 thyratron used to trigger relays in jukeboxes. Reference 2D21 tube is tall.]] A thyratron is a type of gas-filled tube used as a high-power electrical switch and controlled rectifier. Thyratrons can handle much greater currents than similar hard-vacuum tubes. Electron multiplication occurs when the gas becomes ionized, producing a phenomenon known as a Townsend discharge. Gases used include mercury vapor, xenon, neon, and (in special high-voltage applications or applications requiring ve