amplifying tube
121List of experiments — See also: timeline of scientific experiments and list of famous discoveries The following is a list of historically important scientific experiments. A historic scientific experiment is one which demonstrates something of great scientific… …
122Servomechanism — [ thumb|right|200px|Industrial servomotor The grey/green cylinder is the brush type DC motor. The black section at the bottom contains the planetary reduction gear, and the black object atop the motor is the optical encoder for position feedback …
123Voltage regulator — A popular three pin 12 V DC voltage regulator IC. A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level. A voltage regulator may be a simple feed forward design or may include negative feedback …
124Magnetic amplifier — The magnetic amplifier (colloquially known as a mag amp ) is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented early in the 20th century, and was used as an alternative to vacuum tube amplifiers… …
125Astrocyte — For the cell in the gastrointestinal tract, see Interstitial cell of Cajal. Neuron: Astrocyte Astrocytes can be visualized in culture because they express glial fibrillary acidic protein …
126Particle 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… …
127Blocking oscillator — A blocking oscillator is the minimal configuration of discrete electronic components which can produce a free running signal, requiring only a capacitor, transformer, and one amplifying component. The name is derived from the fact that the… …
128Clonewheel organ — The Hammond XB 2 recreates the sound of the vintage electromechanical Hammond organs in a much lighter, smaller keyboard that uses electronic circuits to reproduce the sound of the spinning tonewheels. Clonewheel organ is a jargon term used to… …
