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Output transformerless (OTL) is a type of vacuum tube audio power amplifier, which omits an output transformer for the purpose of greater linearity and fidelity. Conventional vacuum tube amplifier designs rely upon an output transformer to couple the amplifier's output stage to the loudspeaker.
RF power amplifiers using LDMOS (laterally diffused MOSFET) are the most widely used power semiconductor devices in wireless telecommunication networks, particularly mobile networks. [ 4 ] [ 10 ] [ 6 ] LDMOS-based RF power amplifiers are widely used in digital mobile networks such as 2G , 3G , [ 4 ] [ 6 ] and 4G [ 10 ] and the good cost ...
Musical Fidelity's first product was "The Preamp", which incorporated moving coil and moving magnet pre-amplification and a single line-level ‘Tuner’ input. This was originally designed to overcome his dissatisfaction with the Michaelson & Austin TVP-1 pre- amplifier.
Tube sound reproduction using no tubes (extended) It is possible to reproduce the warm and rich sound of vacuum tubes using solid-state systems and even by incorporating fast computers and synthesizers to enhance the effect. One advantage of this approach is the increased reliability of a solid state system compared to vacuum tube system.
Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
Quad 33 pre-amplifier Quad II power amplifier. Following the mass production of 'stereo' vinyl records in 1958, the QC 22 control unit was developed and released in 1959. [3] This was a stereo control unit that was designed to be used with a pair of QUAD II mono power amplifiers.
Antenna amplifier for broadcasting service (here: TV broadcasting and FM sound broadcasting). In electronics, an antenna amplifier (also: aerial amplifier or booster) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead ...
Harman Kardon designed and produced some of the first high fidelity audio products in the 1950s. The company's first product was an FM tuner.. Early integrated receivers (with a tuner, preamplifier and power amplifier) were an attempt to create, improve and produce high fidelity performance in a single unit.
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