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The magnetic amplifier (colloquially known as the mag amp) is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented early in the 20th century, and was used as an alternative to vacuum tube amplifiers where robustness and high current capacity were required. World War II Germany perfected this type of amplifier, and it was used for instance in the V-2 rocket. The magnetic amplifier has now been largely superseded by the transistor-based amplifier, except in a few safety critical, high reliability or ....etc

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Class D amplifiers present us with a revolutionary solution, which would help us eliminate loss and distortions caused due to conversion of digital signals to analog while amplifying signals before transmitting it to speakers. This inchoate piece of knowledge could prove to detrimental in improving and redefining essence of sound and take it to a different realm.

This type of amplifiers do not require the use of D-A conversion and hence reduce the costs incurred for developing state of art output technology. The digital output from sources s ....etc

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MICROWAVE
Electromagnetic wave
Frequency ranging from 0.3GHz to 300GHz
Wavelength is as long as one meter to as short as one millimeter .
It can go through ionosphere
RADAR , Satellite ,Mobile communication

Principle Of Amplification
The power of the microwave is increased by transferring the energy of the excited electrons or atoms to the microwave by different methods
Types of Microwave Amplifiers
Klystron
Magnetron
Travelling wave tubes
Crossed Field Amplifiers
Maser
Klystrons
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what is an amplifier used in a medical device?
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A magnetic amplifier is a device which controls the power delivered from an a.c. source by employing a controllable non linear reactive elements or circuit generally interposed in series with the load. The power required to control the reactive element or circuit is made for less than the amount of power controlled; and hence power amplification is achieved. The non-linear reactive element is a saturable reactor. When used in a combination with a set of high-grade rectifiers, it exhibits power amplification properties in the sense that small ch ....etc

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