A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium...

A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.) is a device for electrically amplifying the power of an electrical radio frequency signal....

radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power...

A valve audio amplifier (UK) or vacuum tube audio amplifier (US) is a valve amplifier used for sound reinforcement, sound recording and reproduction....

of the distortion. Historically, valve amplifiers were often used as a class-A power amplifier simply because valves are large and expensive; many class-A...

single-valve ship receiver Type 91) where the same valve performed the combined functions of RF amplifier, AF amplifier, and diode detector. The RF signal...

being amplified. For example, audio amplifiers amplify signals of less than 20 kHz, radio frequency (RF) amplifiers amplify frequencies in the range between...

radio-frequency (RF) power amplifier, some of which have output power measured in kilowatts, and are used in amateur radio. Other types of linear amplifier are used...

valve or valves All pages with titles beginning with Valve Valve amplifier (tube amplifier) Valve audio amplifier Valve RF amplifier Valve gear Valve...

computers. In the non-inverting amplifier on the right, the presence of negative feedback via the voltage divider Rf, Rg determines the closed-loop gain...

grid-controlled mercury-arc valves bear a superficial resemblance to triode valves, mercury-arc valves cannot be used as amplifiers except at extremely low...

frequency systems it is normal to use valves, see Valve RF amplifier for details of how valved RF power stages work. Valves are electrically very robust, they...

traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in...

a CFA is an amplifier (although a CFA can be driven to oscillate by application of improper low voltages as can any amplifier); a CFA's RF circuit (or...

Today, their main remaining use is in high-power RF amplifiers in radio transmitters and industrial RF heating devices. In recent years there has been...

A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a...

negative feedback in electronic amplifiers. According to Black: Positive feed-back increases the gain of the amplifier, negative feed-back reduces it....

Most high power transmitter amplifiers are of valve construction because of the high power required. Since valves are designed to operate with much higher...

with a 10.7 MHz IF frequency. In that situation, the RF amplifier must be tuned so the IF amplifier does not see two stations at the same time. If the AM...

microwave ovens, and some high-frequency amplifiers. Many audio enthusiasts prefer otherwise obsolete tube/valve amplifiers for the claimed "warmer" tube sound...

extent of the effect depends on the topology of the amplifier. Gain compression in RF amplifiers is similar to soft clipping. However, in narrowband systems...

Virtual Valve Amplifier (VVA) is software algorithm designed and sold by Diamond Cut Productions, Inc. for simulating the sound of various valve amplifier designs...

An RF connector (radio frequency connector) is an electrical connector designed to work at radio frequencies in the multi-megahertz range. RF connectors...

Waveguide Carbon amplifier (see Carbon microphones used as amplifiers) Carbon arc (negative resistance device) Dynamo (historic rf generator) Coherer...

UCLA colleagues J. Chang and Michael Gaitan, demonstrated the first RF CMOS amplifier in 1993. In 1995, Abidi used CMOS switched-capacitor technology to...

the plate voltage of the RF amplifier is modulated with the audio signal. The audio power requirement is 50 percent of the RF-carrier power. Heising (constant-current)...

Distributed amplifiers are circuit designs that incorporate transmission line theory into traditional amplifier design to obtain a larger gain-bandwidth...

second channel, carries power. A valve microphone is a condenser microphone that uses a vacuum tube (valve) amplifier. They remain popular with enthusiasts...

Machine Klystron collection in the Virtual Valve Museum Archived 2010-10-06 at the Wayback Machine Klystron Amplifier "Microwave Gun" klystron developed at...

series was published after 1945 utilising the then ubiquitous EF50 RF pentode amplifier valve (tube). With the outbreak of World War II and the expected shortages...