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Voltage source vs. current source amplifiers
https://forum.audiogon.com/discussions/voltage-source-vs-current-source-amplifiers#:~:text=A%20current%20source%20amp%20is%20an%20amplifier%20whose,is%20a%20bit%20different%20from%20voltage%20%28traditional%29%20feedback.
Constant Current Sources for Audio Amplifiers
https://nathaliebeimler.com/tech/audio_amplifier_current_source_comparison.html
Constant current sources for audio amplifiers Abstract. Constant current sources are basic building blocks of almost every analog audio amplifier. There are countless circuits and each has its own unique properties. In this article I will compare a small selection of different variants with each other in order to identify their advantages. I will use the best ones for my next audio …
Current Source Amplifiers and Sensitive / Full-Range Drivers
https://www.passdiy.com/pdf/cs-amps-speakers.pdf
We built an audio current source that delivered 1 amp of AC current per input volt to a maximum of 10 amps. This kind of amplifier is known as a power transconductance amplifier. Such circuits are fairly common in small chips which don’t generate the high current necessary to drive a …
Current Source Amps and Sensitive/Full-Range Drivers ...
https://audioxpress.com/article/Current-Source-Amps-and-Sensitive-Full-Range-Drivers
We built an audio current source that delivered 1A of AC current per input volt to a maximum of 10A. This kind of amplifier is known as a power transconductance amplifier. Such circuits are fairly common as small chips, but those do not have the high current needed to drive a …
Voltage source vs. current source amplifiers
https://forum.audiogon.com/discussions/voltage-source-vs-current-source-amplifiers
A current source amp is an amplifier whose output impedance is significantly higher than that of the load and so makes constant current regardless of load. This is not a tube or solid state amp in particular; to achieve this, the amp must employ current feedback, which is a bit different from voltage (traditional) feedback.
Current Sources, Sinks and Mirrors in Audio
https://sound-au.com/ism.htm
5.1 - Current Source Transistor Loads. Using a current source as the load for a transistor (or JFET) increases gain and improves linearity. It's a surprisingly common technique, but it's not always obvious that there is a current source or it's purpose. Current sources can also use an opamp, especially if a particularly accurate current is needed.
The Alexander Current-Feedback Audio Power …
https://www.analog.com/media/en/technical-documentation/application-notes/58052492001115525484056221917334AN211.pdf
Title: The Alexander Current-Feedback Audio Power Amplifier Application Note (AN-211) Author: Analog Devices, Inc. Created Date: 0-01-01T00:00:00Z
The talk of current amplifier vs voltage in audio ...
https://electronics.stackexchange.com/questions/226401/the-talk-of-current-amplifier-vs-voltage-in-audio
So in theory current steering might be "better". 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.
CS-Amplifier-with-Current-Source-Load | Analog-CMOS-Design ...
https://www.electronics-tutorial.net/Analog-CMOS-Design/MOSFET-Amplifiers/CS-Amplifier-with-Current-Source-Load/
CS Amplifier with Current Source Load : Figure below shows the circuit diagram of CS amplifier with current source load. In this a current source is made by using a PMOS transistor operated in saturation mode by using a Gate bias V b. The small signal …
Implementation and Applications of Current Sources …
https://www.ti.com/lit/an/sboa046/sboa046.pdf
USING REF200 AND ONE EXTERNAL OP AMP: Current Source or Sink With Compliance to Power Supply Rail and Current Out >100µA You can build a programmable current source of virtually any value using two resistors, an op amp, and a 100µA current source as a reference. The current source shown in Figure 12 can be programmed
Amplifier topologies for current-drive | Current-Drive ...
https://www.current-drive.info/9
An amplifier that converts input voltage into output current is generally called a transconductor, and the symbol of transconductance, i.e. the ratio of output current to input voltage, is usually gm. However, the term "amplifier" is still quite appropriate since both current and power are at the output always greater than at the input.
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