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  • Class A Amplifiers
    and there is only a small delay between the introduction of signal at the amplifier's inputs and outputs. If all stages of the amplifier are biased in Class A mode, and the amplifier produces all currents at its output, regardless of input signal. Because of the full-bias-current-on state of Class A amplifiers
  • Operational Amplifiers
    M.S. Kennedy has an extensive line of standard product amplifiers as well as many industry replacement amplifiers. We offer a wide variety of amplifiers for use in many different applications. Our hybrid operational amplifiers take advantage of the most current design and construction techniques
  • Raman Amplifiers
    Raman amplifiers are optical amplifiers that function by tracking Raman scattering. When light is transmitted through matter, part of the light is scattered in random directions. A small part of the scattered light has frequencies removed from the frequency of the incident beam by quantities equal
  • Class AB Amplifiers
    Class AB amplifiers are a combination of Class A and Class B operations. Amplifiers are said to be in Class AB operation if the amplifier operates in Class A for part of its output, and turns on an additional current for the rest of its output. Amplifier slew rate is slower in Class AB operations
  • Servo Amplifier Tutorial
    The "Servo Amplifier" on-line tutorial reviews the operation of servo amplifiers used to drive DC and brushless motors. The complete tutorial with audio can be viewed at The tutorial begins with a discussion of the power regulating methods, leading
  • Class H Amplifiers
    . The efficiency of Class H amplifiers is comparable to Class G amplifier designs.
  • Semiconductor Optical Amplifier (SOA)
    A semiconductor optical amplifier (SOA) works in a similar way to a basic laser. The structure is much the same, with two specially designed slabs of semiconductor material on top of each other, with another material in between them forming the 'active layer'. An electrical current is set running
  • Amplifier Specifications Definitions
    as the ratio of the power measured at the output of an amplifier to the power provided to the input port. It is usually expressed in decibels and is typically measured in a swept fashion across the operating frequency range. The gain of all amplifiers is verified by a swept measurement before

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