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Output Power of Audio Amplifier
https://amplifier.cd/Tutorial/Power/output_power.htm
Two channels are used. Channel 1 measures the amplifiers output voltage by using a probe. Channel 2 measure the current with a sufficient fast current probe e.g. Tektronix P6042, P6019 / 134, or AM503. Channel 1 is to be multiplied by channel 2 in the computer of the oscilloscope and for this product is during one period the integral to be formed.
New Audio Amplifiers With Current Amplifier Outputs.
http://nov79.com/amr/amf1.htm
The current amplifier solves the output problem by following the voltage amplifier with a circuit which gains the current (and hence, load driving capacity) without internal voltage gain. The current amplifier is low in noise because of the absence of internal voltage gain. It is also low in distortion because of its high speed.
More Current-Output Amplifiers - Tube CAD
https://www.tubecad.com/2011/10/blog0217.htm
current in audio amplifier - Electrical Engineering Stack ...
https://electronics.stackexchange.com/questions/49699/current-in-audio-amplifier
As a first step, here's how it might work. Specify the input voltage you need to give full output (a typical value is 1V rms) - this lets you work out the voltage gain of the amp, but that's another matter. Also specify the input impedance (10kilohms is a typical value). Divide, and you have the input current (in this case, 0.1ma rms).
Amplifiers: Output stage - Lenard Audio
https://education.lenardaudio.com/en/12_amps_5.html
Output transistors can only add current. Quasi complementary is used in the majority of amplifiers. The first large silicon transistors (2N3055) enabled power amplifiers to be capable of 50 Watts but were only available as NPN and not as PNP. When PNP power transistors (2N2955) became available they were twice the price.
a dream...real audio current amplifier.... | diyAudio
https://www.diyaudio.com/community/threads/a-dream-real-audio-current-amplifier.111106/
In teory a current amplifier, is a device with an infinite output impedence. we need a big band width,,,low distortion....bla.....bla... But if we built an amplifier that convert an input voltage signal of 1-2 volts (that comes from a preamplifier for example) into a current output proportional to this signal
Amplifier current vrs watts; why is current more important?
https://forum.audiogon.com/discussions/amplifier-current-vrs-watts-why-is-current-more-important
Amps do not "have current", they output current. Massive current gain stages are usually less linear than more modest stages and require more feedback to keep behaved this is also incorrect. Typically an amp consists of a voltage amplifier or stages of voltage amplification followed by current gain from the final stage.
The talk of current amplifier vs voltage in audio ...
https://electronics.stackexchange.com/questions/226401/the-talk-of-current-amplifier-vs-voltage-in-audio
The fact remains that it is impractical, a current output amplifier would apply the maximum voltage it can deliver (it would clip !!!) when no speaker is connected or the speaker's impedance becomes too high. Normal voltage output amplifiers only clip when overloaded when a large signal is applied. This behaviour is much more convenient.
12V Audio Power Amplifier Circuit using TIP35C – Class …
https://circuitdigest.com/electronic-circuits/12v-audio-power-amplifier-circuit-using-tip35c
The output from the pre-amplifier is further submitted to the power amplifier. A power amplifier source the current to the load depending on the input signal amplitude. Thus, a power amplifier is an electronic device that provides …
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