Leak — A leak is a hole or other opening, usually unintended and therefore undesired, in a container or fluid containing system, such as a tank or a ship s hull, through which the contents of the container can escape or outside matter can enter the… … Wikipedia
Grid-leak detector — A grid leak detector is a combination diode rectifier and audio amplifier used as a detector in vacuum tube A.M. radio receivers. In the circuit, the grid of the detector usually a low mu or medium mu triode is connected to the secondary of the… … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Chest tube — Intervention The free end of the Chest Drainage Device is usually attached to an underwater seal, below the level of the chest. This allows the air or fluid to escape from the pleural space, and prevents anything returning to the chest … Wikipedia
Fire-tube boiler — A fire tube boiler is a type of boiler in which hot gases from the fire pass through one or more tubes within the boiler. It is one of the two major types of boilers, the other being the water tube boiler. A fire tube boiler can be either… … Wikipedia
grid leak — noun : a resistor used in parallel with a capacitor in the grid circuit of a vacuum tube to limit grid bias by drawing off excess electrons that accumulate on the tube grid * * * Electronics. a high resistance device that permits excessive… … Useful english dictionary
Shell and tube heat exchanger — A shell and tube heat exchanger is a class of heat exchanger designs. [ cite book|author=Sadik Kakaç and Hongtan Liu|title=Heat Exchangers: Selection, Rating and Thermal Design|edition=2nd Edition|publisher=CRC Press|year=2002|id=ISBN 0849309026] … Wikipedia
Water-tube boiler — A water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire. Water tube boilers are used for high pressure boilers. Fuel is burned inside the furnace, creating hot gas which heats up water in the steam … Wikipedia
Light tube — This article is about light tubes used for the illumination of buildings. For other uses of the phrase light tubes , see Light tube (disambiguation). Light tubes Light tubes or light pipes are used for transporting or distributing natural or… … Wikipedia
Battery (vacuum tube) — In electronics, vacuum tubes were traditionally powered by batteries. Each battery had a different designation depending on which vacuum tube element it was associated with.Initially, the only such device was a diode with only a filament… … Wikipedia
Grid leak — is the small current through the grid of a thermionic valve into the circuit which feeds the grid. It is an inherent operating characteristic of triodes and other vacuum tubes.This current is caused by the small negative EMF which is present in… … Wikipedia
