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Amplifiers & Impedance - Learn About Electronics
https://www.learnabout-electronics.org/Amplifiers/amplifiers43.php#:~:text=Audio%20input%20sources%2C%20such%20as%20microphones%2C%20pick-ups%2C%20radio,input%20devices%2C%20as%20described%20in%20Amplifiers%20Module%204.1.
Is there any standard for the input impedance of an audio ...
https://electronics.stackexchange.com/questions/342975/is-there-any-standard-for-the-input-impedance-of-an-audio-amplifier
Generally the input impedance to an audio amplifier is 'high'. That is, high enough to be driven comfortably by any audio source output. But of course, without a proper specification, you are taking something of a gamble. 10k to 100k is the usual sort of range we find, though some can be less.
What is Impedance in Audio? Input and Output …
https://virtuosocentral.com/what-is-impedance-in-audio/
The input impedance of the XLR balanced connector of a mixer or preamp is between 1500 – 3000 Ohms. This ensures an excellent current flow between the two devices. Impedance When Connecting Speakers and Amplifiers
Amplifier Input Impedance - High-End Audio Discussion Forum
https://forum.audiogon.com/discussions/amplifier-input-impedance
Audiolabyrinth, if you have an amplifier, tube or solid state, with a 100KOhm input impedance, any preamp tube or solid state will work with it. The general rule of thumb is that the source have an output impedance that is no more than 1/10th of the value of the load.
Amp INPUT impedance | diyAudio
https://www.diyaudio.com/community/threads/amp-input-impedance.294984/
Input impedance is the impedance seen at the input of an item (could be a single stage or a whole piece of equipment). It forms a potential divider with the output impedance of whatever comes before it. Normally in audio we want input impedances to be significantly greater than output impedances, so there is little attenuation of the signal.
Impedance Matching of Audio Components
http://hyperphysics.phy-astr.gsu.edu/hbase/Audio/imped.html
For a microphone impedance Ri= Ω. and a preamp input impedance of RL=Ω. the signal loss would be dB. As long as the microphone has enough signal strength to provide the minimum signal input to the mixer, it can be an advantage to connect a low impedance microphone to a moderately higher impedance input.
Understanding Impedance - Sound on Sound
https://www.soundonsound.com/techniques/understanding-impedance
The DIN specification states that the current source should give an output voltage of 1mV per 1kΩ of input impedance. Typically, the input impedance of a DIN-compatible unit would be 100kΩ, and so would see an input signal voltage of about 100mV. Hi-fi equipment with phono connectors usually employs the voltage matching concept, with very low output impedance and much …
How to measure the input impedance of my audio …
https://www.quora.com/How-can-I-measure-the-input-impedance-of-my-audio-amplifier-if-I-dont-know-what-is-inside
Input impedance for an audio amplifier is not an important parameter. It is input sensitivity that needs serious consideration. You need to use AC at audio frequency to get past the blocking capacitor on the input. (A resistance test meter may not give a meaningful reading.)
Insensitive High-Output Impedance Current- Mode …
http://www.iaeng.org/publication/IMECS2017/IMECS2017_pp684-687.pdf
an external impedance connected to the z-terminal. The CFTA consists essentially of the current follower at the input part and the multi-output transcondcutance amplifier at the output part. According to equation (1), the f-terminal forms the current input terminal at ground potential (vf = 0) and the output current at the z-terminal (iz ...
(PDF) Generalized Impedance Function Simulator Using ...
https://www.researchgate.net/publication/312575918_Generalized_Impedance_Function_Simulator_Using_Voltage_Differencing_Buffered_Amplifiers_VDBAs
The presented general impedance function simulator employs two voltage differencing buffered amplifiers (VDBAs) and three various passive components. The realized equivalent impedance values can be...
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