valve amplifier वाक्य
उदाहरण वाक्य
मोबाइल
- While semiconductor amplifiers have largely displaced valve amplifiers for low power applications, valve amplifiers can be much more cost effective in high power applications such as radar, countermeasures equipment, and communications equipment.
- Orange Matamp 100W valve amplifier, usually used with two 4 x 12 Orange speaker cabinets ( used by the whole band for a period ) and separate Orange ( valve ) spring reverb unit.
- Modern amplifiers invariably run from the mains; as there is little need to minimise costs in expensive valve amplifiers, the heater supply is often rectified and even regulated to reduce hum to an absolute minimum.
- The basic gain stage for a valve amplifier is the auto-biased common cathode stage, in which an anode resistor, the valve, and a cathode resistor form a potential divider across the supply rails.
- Valve amplifiers are used for applications such as guitar amplifiers, satellite transponders such as DirecTV and GPS, audiophile stereo amplifiers, military applications ( such as radar ) and very high power radio and UHF television transmitters.
- In the audiophile world, such popularity is justified on the basis of sound quality, the earlier valve amplifier designs were free of such artifacts as crossover distortion that beset the early bipolar transistor designs of the 1960s.
- In this design, the audio signal is applied directly to the stators from a built-in high-voltage valve amplifier ( as valves are also high impedance devices ), without use of a step-up transformer.
- A "'valve audio amplifier "'( UK ) or "'vacuum tube audio amplifier "'( United States ) is a valve amplifier used for sound reinforcement, sound recording and reproduction.
- This circuit was designed to emulate valve amplifier distortion [ hence V-S for valve sound ] but with controllable master volume, the V-S circuit was encased in a block of resin to prevent copying by competitors.
- Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later.
- A "'valve amplifier "'or "'tube amplifier "'is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a solid state amplifiers during the 1960s and 1970s.
- Valve amplifiers are perceived by musicians and fans to have a " warmer " tone than those of transistor amps, particularly when overdriven ( turned up to the level that the amplifier starts to " lead " tone ) with a foot-operated switch.
- It was realized that such devices could be used in the detection and counting of Alpha particles in the nuclear disintegration experiments then being undertaken by Rutherford, who encouraged him to devote his attention to the construction of a reliable valve amplifier and methods of registering and counting particles.
- During this period, the Selmer range of Treble & Bass 50 & 100 valve amplifiers appeared to be stylistic relics from pre-1959 and the decision was made to move the manufacturing facility to a disused brush and coconut matting works dating from 1914, based in rural Essex.
- The development of AC-operated domestic radio receivers in the late 1920s created a demand for large-capacitance ( for the time ) and high-voltage capacitors for the valve amplifier technique, typically at least 4 microfarads and rated at around 500 volts DC . Waxed paper and oiled silk film capacitors were available, but devices with that order of capacitance and voltage rating were bulky and prohibitively expensive.
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