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2. Naim Audio amplification - Wikipedia

   en.wikipedia.org/wiki/Naim_Audio_amplification

   The company's first amplifier, the NAP 160, is a two-channel power amplifier with an output of 60 watts per channel; the NAP 135, which is a one-channel amplifier based on the same design as the NAP 250 rated at 135 watts. A custom-built very fast and heavy-duty TO3 transistor device was employed in the original Naim amplifiers.

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4. Naim Audio - Wikipedia

   en.wikipedia.org/wiki/Naim_Audio

   The first product Naim put on the market was the NAP160 power amplifier; it was followed by the NAC12 pre-amplifier. [1] The two-channel NAP 250 amplifier, launched in 1975, is perhaps Naim Audio's most well-known analogue product, as its basic circuit layout was shared by all the company's power amplifiers until the introduction of the NAP500 in 2000.

5. Alternator (automotive) - Wikipedia

   en.wikipedia.org/wiki/Alternator_(automotive)

   Alternator (silver) mounted on a V8 engine Alternator voltage regulator (brushes are worn out) An alternator is a type of electric generator used in modern automobiles to charge the battery and to power the electrical system when its engine is running. Until the 1960s, automobiles used DC dynamo generators with commutators.

6. Alexanderson alternator - Wikipedia

   en.wikipedia.org/wiki/Alexanderson_alternator

   An Alexanderson alternator is a rotating machine, developed by Ernst Alexanderson beginning in 1904, for the generation of high-frequency alternating current for use as a radio transmitter. It was one of the first devices capable of generating the continuous radio waves needed for transmission of amplitude modulated (AM) signals by radio.

7. Johnson Amplification - Wikipedia

   en.wikipedia.org/wiki/Johnson_Amplification

   Johnson Amplification was a subsidiary of DigiTech by the Harman Music Group, which manufactured and sold amplifiers using a design by John Johnson. Johnson amplifiers used tube integrated modeling technology, a method of emulating the sounds of several different types of classic and modern amplifier with a high degree of accuracy and ease of operation.

8. Double-sideband suppressed-carrier transmission - Wikipedia

   en.wikipedia.org/wiki/Double-sideband_suppressed...

   DSB-SC is basically an amplitude modulation wave without the carrier, therefore reducing power waste, giving it a 50% efficiency. This is an increase compared to normal AM transmission (DSB) that has a maximum efficiency of 33.333%, since 2/3 of the power is in the carrier which conveys no useful information and both sidebands containing identical copies of the same information.

9. Audio power amplifier - Wikipedia

   en.wikipedia.org/wiki/Audio_power_amplifier

   Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus 1 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.