power amplifiers
Audio output boosters
Power amplifiers are electronic devices that increase the strength of an electrical signal, particularly for audio or radio frequency applications.
In audio systems, a power amplifier takes a weak signal from a preamplifier and boosts it enough to drive speakers: The band's power amplifiers filled the stadium with sound.
In radio transmission, they amplify signals for broadcast.
- linearizationApproximating nonlinear with linear
- solid stateUsing semiconductors, not tubes
- signalMessage-conveying cue
- microwavesElectromagnetic waves for cooking
- signal boostersDevices amplifying weak transmissions
signal processing · harmonic distortion · push pull · electron beam · heat · analog · hum · helix · saturation · speaker · high fidelity · glow · channels · impedance · transistors · subwoofer · audio · stereo
active vs passive signal handling
power amplifierspassive speakers
Speakers lacking internal amplification