About the Book
This book consists of articles from Wikia. Pages: 56. Chapters: Electrophysiology equipment, Historical lab equipment, Mazes, Measuring instruments, Medical equipment, Amplifiers, Analog computers, Audiometers, Audiotapes, Audiovisual communications media, Augmentative communication, Cage apparatus, Cameras, Computers, Computer peripheral devices, Crocker-Henderson smell classification, Electrodes, Experimental laboratories, Eye tracker, Galvanometer, Generators, History of psychology laboratories, Incubators, Keyboards, Kymograph, Maxwell's discs, Mazes, Memory drum, Metronomes, Morris water maze, Neurofeedback systems & equipment, Polygraphs, Pupilometer, Shock units, Shuttle boxes, Skinner boxes, Snellen chart, Sonar, Stimulators, Strobe light, Tachistoscopes, Tape recorders, Television, Timers, Transducers, Trial case, T mazes, Vibrators, Visual cliff, Volt meters, Zwaardemaker olfactometer, Microelectrode, Polygraphs, String galvanometer, Use of the polygraph in lie detection, Lippmann electrometer, String galvanometer, Barnes maze, Elevated plus maze, Maze pathways, Morris water maze, Porteus Maze Test, Radial arm maze, T mazes, Y-maze, Actigraph, Flight instruments, Polygraphs, SQUID, Stroboscope, Volt meters, Artificial limb, Forceps, Plethysmographs, Prostheses, Reflex hammer, Sphygmomanometer, Transcutaneous Electrical Nerve Stimulation. Excerpt: Generally, an amplifier is any device that will use a small amount of energy to control a larger amount of energy. In popular use, the term today usually refers to an electronic amplifier, often as in audio applications. The relationship of the input to the output of an amplifier - usually expressed as a function of the input frequency - is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain. Most amplifiers can be characterized by a number of parameters. The gain is the ratio of output power to input power, and is usually measured in decibels .(When mea...
