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6550
Tung-Sol was an American manufacturer of electronics, mainly lamps and vacuum tubes. History Tung-Sol was founded as Tung-Sol Lamp Works Inc. in Newark, New Jersey in 1907. Their early products were mainly geared towards the automotive market and included headlamps, pilot lights, and flashlight bulbs. The trade name was formed from the first syllable of "tungsten" and the Latin word "sol" meaning sun. The company entered the electronics field in the 1920s. In time they established themselves as leaders in the development and production of vacuum tubes, with their main competition including RCA and Sylvania. By 1951, they began doing business as Tung-Sol Electric Inc. Soon after, they were acquired by Wagner Electric, which itself merged into Studebaker-Worthington in 1967. Tung-Sol was also active in the semiconductor industry, with its transistors being easily recognizable by their sky blue color. Tung-Sol was privately held and run like a laboratory. This gave Tung-Sol vac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6550
Tung-Sol was an American manufacturer of electronics, mainly lamps and vacuum tubes. History Tung-Sol was founded as Tung-Sol Lamp Works Inc. in Newark, New Jersey in 1907. Their early products were mainly geared towards the automotive market and included headlamps, pilot lights, and flashlight bulbs. The trade name was formed from the first syllable of "tungsten" and the Latin word "sol" meaning sun. The company entered the electronics field in the 1920s. In time they established themselves as leaders in the development and production of vacuum tubes, with their main competition including RCA and Sylvania. By 1951, they began doing business as Tung-Sol Electric Inc. Soon after, they were acquired by Wagner Electric, which itself merged into Studebaker-Worthington in 1967. Tung-Sol was also active in the semiconductor industry, with its transistors being easily recognizable by their sky blue color. Tung-Sol was privately held and run like a laboratory. This gave Tung-Sol vac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KT88
The KT88 is a beam tetrode/kinkless tetrode (hence "KT") vacuum tube for audio amplification. Features The KT88 fits a standard eight-pin octal socket and has similar pinout and applications as the 6L6 and EL34. Specifically designed for audio amplification, the KT88 has higher plate power and voltage ratings than the American 6550. It is one of the largest tubes in its class and can handle significantly higher plate voltages than similar tubes, up to 800 volts. A KT88 push-pull pair in class AB1 fixed bias is capable of 100 watts of output with 2.5% total harmonic distortion or up to about 50W at low distortion in hi-fi applications. The transmitting tubes TT21 and TT22 have almost identical transfer characteristics to KT88 but a different pinout, and by virtue of their anode being connected to the top cap have a higher plate voltage rating (1.25 kilovolt) and a higher power output capability of 200 watts in class AB1 push–pull. The screen grid is sometimes tied to the anod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marshall Amplification
Marshall is a British company that designs and manufactures music amplifiers, speaker cabinets, brands personal headphones and earphones, drums and bongos. The company also owns a record label called Marshall Records. It was founded in London by drum shop owner and drummer, Jim Marshall, and is now based in Bletchley, Milton Keynes, England. Marshall's guitar amplifiers are among the most recognised in the world. Their signature sound characterised by sizzling distortion and "crunch" was conceived after guitarists, such as Pete Townshend, visited Marshall's drum shop complaining that the guitar amplifiers then on the market did not have the right sound or enough volume. After gaining publicity, Marshall guitar amplifiers and loudspeaker cabinets were sought by guitarists for this new sound and increased volume. Many of the current and reissue Marshall guitar amplifiers continue to use valves, as is common in this market sector. Marshall also manufactures less expensive solid- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KT90
The KT90 is a vacuum tube used in audio applications. Typically, it is used in hi-fi or electric guitar amplifier applications. KT90 was developed by Elektronska Industrija Niš (Ei). KT90 is designed by Blagomir Bukumira,a leading engineer at Ei Features The KT90, or in full, "Kinkless Tetrode 90", is a beam power tetrode and features the same octal socket as its smaller variant, the KT88. It may therefore be used as a substitute, given appropriate re-biasing when used in push-pull configuration. The KT90 is currently manufactured by Electro-Harmonix, who claim that, despite its different construction, it possesses similar sound characteristics to the EL34 The EL34 is a thermionic vacuum tube of the power pentode type. The EL34 was introduced in 1955 by Mullard, who were owned by Philips. The EL34 has an octal base (indicated by the '3' in the part number) and is found mainly in the final output st ... valve. Semi-formal research has been conducted by U.K. supplier Watford V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamp (electrical Component)
An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the socket of a light fixture, which is often called a "lamp" as well. The electrical connection to the socket may be made with a screw-thread base, two metal pins, two metal caps or a Bayonet mount, bayonet cap. The three main categories of electric lights are incandescent lamps, which produce light by a Incandescent light bulb#Filament, filament heated white-hot by electric current, gas-discharge lamps, which produce light by means of an electric arc through a gas, such as fluorescent lamps, and LED lamps, which produce light by a flow of electrons across a band gap in a semiconductor. Before electric lighting became common in the early 20th century, people used candles, gas lighting, gas lights, oil lamps, and fires. Vasily Vladimirovich Petr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turn Signal
The lighting system of a motor vehicle consists of lighting and signalling devices mounted to or integrated into the front, rear, sides, and in some cases the top of a motor vehicle. They illuminate the road ahead for the driver and increase the vehicle's visibility, allowing other drivers and pedestrians to see its presence, position, size, direction of travel, and its driver's intentions. Emergency vehicles usually have distinctive lighting equipment to warn drivers and indicate priority of movement in traffic. History Early road vehicles used fuelled lamps before the availability of electric lighting. The Ford Model T used carbide lamps for headlights and oil lamps for tail lights. It did not have all-electric lighting as a standard feature until several years after its introduction. Dynamos for automobile headlights were first fitted around 1908 and became commonplace in 1920s automobiles. Silent film star Florence Lawrence is often credited with designing the first " a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leslie Speaker
The Leslie speaker is a combined amplifier and loudspeaker that projects the signal from an electric or electronic instrument and modifies the sound by rotating a baffle chamber ("drum") in front of the loudspeakers. A similar effect is provided by a rotating system of horns in front of the treble driver. It is most commonly associated with the Hammond organ, though it was later used for the electric guitar and other instruments. A typical Leslie speaker contains an amplifier, a treble horn and a bass speaker—though specific components depend upon the model. A musician controls the Leslie speaker by either an external switch or pedal that alternates between a slow and fast speed setting, known as "chorale" and "tremolo". The speaker is named after its inventor, Donald Leslie, who began working in the late 1930s to get a speaker for a Hammond organ that better emulated a pipe or theatre organ, and discovered that baffles rotating along the axis of the speaker cone gave the best ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bass Instrument Amplification
A bass amplifier (also abbreviated to bass amp) is a musical instrument electronic device that uses electrical power to make lower-pitched instruments such as the bass guitar or double bass loud enough to be heard by the performers and audience. Bass amps typically consist of a preamplifier, tone controls, a power amplifier and one or more loudspeakers ("drivers") in a cabinet. While bass amps share many features with the guitar amplifiers used for electric guitar, they are distinct from other types of amplification systems, due to the particular challenges associated with low-frequency sound reproduction. This distinction affects the design of the loudspeakers, the size and design of the speaker cabinet and the design of the preamplifier and amplifier. Speaker cabinets for bass amps usually incorporate larger loudspeakers (e.g., speakers are more common for bass than for electric guitar amps) or more speakers and larger cabinet sizes than those used for the amplificat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guitar Amplifier
A guitar amplifier (or amp) is an electronic device or system that strengthens the electrical signal from a pickup on an electric guitar, bass guitar, or acoustic guitar so that it can produce sound through one or more loudspeakers, which are typically housed in a wooden cabinet. A guitar amplifier may be a standalone wood or metal cabinet that contains only the power amplifier (and preamplifier) circuits, requiring the use of a separate speaker cabinet–or it may be a "combo" amplifier, which contains both the amplifier and one or more speakers in a wooden cabinet. There is a wide range of sizes and power ratings for guitar amplifiers, from small, lightweight "practice amplifiers" with a single 6-inch speaker and a 10-watt amp to heavy combo amps with four 10-inch or four 12-inch speakers and a 100-watt amplifier, which are loud enough to use in a nightclub or bar performance. Guitar amplifiers can also modify an instrument's tone by emphasizing or de-emphasizing certain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampeg
Ampeg is a manufacturer best known for its bass amplifiers. Originally established in 1946 in Linden, New Jersey by Everett Hull and Stanley Michaels as "Michael-Hull Electronic Labs," today Ampeg is part of the Yamaha Guitar Group. Although specializing in the production of bass amplifiers, Ampeg has previously manufactured guitar amplifiers and pickups and instruments including double basses, bass guitars, and electric guitars. History Early years (1946―1959) Everett Hull (born Charles Everitt Hull), a pianist and bassist from Wisconsin working with bandleader Lawrence Welk in Chicago, had invented a pickup for upright bass in an effort to amplify his instrument with more clarity. Hull's design placed a transducer atop a support peg inside the body of his instrument, inspiring his wife Gertrude to name the invention the "Ampeg," an abbreviated version of "amplified peg." On February 6, 1946, Hull filed a patent application for his "sound amplifying means for strin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philips
Koninklijke Philips N.V. (), commonly shortened to Philips, is a Dutch multinational conglomerate corporation that was founded in Eindhoven in 1891. Since 1997, it has been mostly headquartered in Amsterdam, though the Benelux headquarters is still in Eindhoven. Philips was formerly one of the largest electronics companies in the world, but is currently focused on the area of health technology, having divested its other divisions. The company was founded in 1891 by Gerard Philips and his father Frederik, with their first products being light bulbs. It currently employs around 80,000 people across 100 countries. The company gained its royal honorary title (hence the ''Koninklijke'') in 1998 and dropped the "Electronics" in its name in 2013, due to its refocusing from consumer electronics to healthcare technology. Philips is organized into three main divisions: Personal Health (formerly Philips Consumer Electronics and Philips Domestic Appliances and Personal Care), Connecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Electric
General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable energy, digital industry, additive manufacturing and venture capital and finance, but has since divested from several areas, now primarily consisting of the first four segments. In 2020, GE ranked among the Fortune 500 as the 33rd largest firm in the United States by gross revenue. In 2011, GE ranked among the Fortune 20 as the 14th most profitable company, but later very severely underperformed the market (by about 75%) as its profitability collapsed. Two employees of GE – Irving Langmuir (1932) and Ivar Giaever (1973) – have been awarded the Nobel Prize. On November 9, 2021, the company announced it would divide itself into three investment-grade public companies. On July 18, 2022, GE unveiled the brand names of the companies it will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
