valve oscillator
41parts — Synonyms and related words: AF amplifier, AFC, AFC mixer, CRT, CW oscillator, FM detector, PCV valve, RF amplifier, TR switch, TR unit, ability, accelerator, adder, adjustable propeller, afterburner, aileron, air controls, air scoop, airscrew,… …
42mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …
43Mechanical fan — Household electric box fan with a propeller style blade A mechanical fan is a machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. Usually, it… …
44generator — Synonyms and related words: AC motor, Corliss engine, Otto engine, PCV valve, Wankel engine, accelerator, actuator, aeromotor, agent, air engine, alternator, ammeter, amplifier, ancestors, anode, apprentice, architect, armature, artificer, artist …
45Philo Farnsworth — Infobox Person name = Philo Taylor Farnsworth image size = caption = 1983 United States postage stamp honoring Farnsworth birth name = birth date = birth date|1906|8|19 birth place = Beaver, Utah, USA death date = death date and… …
46Control grid — The control grid is an electrode used in thermionic valves (vacuum tubes) used to modulate the flow of electrons in the cathode to anode or plate circuit. Contents 1 Operation 2 Construction 3 Effects of grid position …
47Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …
48Mullard-Philips tube designation — In Europe, the principal method of numbering vacuum tubes (or thermionic valves , as they are referred to in Europe and Australia, etc.) was the nomenclature developed and used by Mullard in the UK and applied Europe wide thanks to their… …
49Positive feedback — Alarm or panic can spread by positive feedback among a herd of animals to cause a stampede. Positive feedback is energy taken from the output of a system and reapplied to the input, which is phase congruent with the input signal. A system… …
50Electronic organ — Yamaha GX1, a synthesizer organ in 1970s WERSI Scala, an …
