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8 W audio power amplifier: LM384 5 W audio power amplifier (fixed 34 dB gain) [44] LM1875 20 W audio power amplifier (up to 90 dB gain) [45] LM1876 Dual 20 W audio power amplifier with Mute and Standby Modes (up to 90 dB gain) [46] LM386: Low voltage audio power amplifier [47] LM389 Yes Low voltage audio power amplifier (same as LM386) with 3 ...
The second amplifier released was the Phase Linear 400 with 200 watts per channel. It shared the same distinctive brushed aluminum, dual VU meters front panel style as the 700. It retailed for just under $500. [1] The next product was the Phase Linear 4000 Series Auto-correlation Pre-Amplifier introduced in 1973 and manufactured through 1978.
In electronics, power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier 's characteristics and performance. The first three classes are related to the time period that the active amplifier device is passing current, expressed as a fraction of the period of a ...
Some two channel amplifiers, or stereo amplifiers, have the built in facility to operate in bridge mode by operating a switch and observing the input and output connections detailed on the back panel or in the manual. This option is most often found in high power PA equipment or amplifiers designed for car audio applications.
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A 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 signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter , their output driving the antenna .
In very high power transmitters, such as 10 kilowatts and above, multiple IPAs are combined to provide enough drive for the final. An exciter, an even lower power transmitter, provides a similar service to the IPA by driving it; although an exciter usually encompasses other important functions, such as choosing the frequency of the RF.