amplifying device
111Tragedy — other uses redirect|Tragedian LiteratureTragedy ( gr. , tragōidia , goat song ) is a form of art based on human suffering that offers its audience pleasure. [Banham (1998, 1118). In his speculative work on the origins of Athenean tragedy, The… …
112Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… …
113Magic gun — Magic guns, also called spellguns or casters (presumably short for spellcaster ), are an element of science fantasy (fantasy/science fiction) that combines firearms and magic (or some other supernatural power) to create a weapon with properties… …
114Particle beam weapon — A particle beam weapon uses an ultra high energy beam of atoms or electrons (i.e., a particle beam) to damage a material target by hitting it, and thus disrupting its atomic and molecular structure. A particle beam weapon is a type of directed… …
115Wireless microphone — A wireless microphone, as the name implies, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated.Various individuals and organizations claim to be the inventors …
116Optical hybrid — A 90° optical hybrid is a six port device that is used for coherent signal demodulation for either homodyne or heterodyne detection. It would mix the incoming signal with the four quadratural states associated with the reference signal in the… …
117amplifier — 1. A device that increases the magnification of a microscope. 2. An electronic apparatus that increases the strength of input signals. image a. a device for converting a low light level fluoroscopic …
118Definitions of terrorism — Terrorism Definitions · Counter terrorism International conventions Anti terrorism legislation Terrorism insurance …
119Negative feedback amplifier — Figure 1: Ideal negative feedback model A negative feedback amplifier (or more commonly simply a feedback amplifier) is an amplifier which combines a fraction of the output with the input so that a negative feedback opposes the original signal.… …
120Differential amplifier — symbol The inverting and non inverting inputs are distinguished by − and + symbols (respectively) placed in the amplifier triangle. Vs+ and Vs− are the power supply voltages; they are often omitted from the diagram for simplicity, but of course… …
