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Audio Optocouplers - Learn About Electronics
https://www.learnabout-electronics.org/Semiconductors/opto_53.php
Basic Audio Optocoupler. The circuit shown in Fig. 5.3.4, adapted from a design in Newnes Electronic Circuits Pocket Book by Ray Marston (ISBN 10:1-4832-9192-8) uses the 4N25 connected as a phototransistor to pass audio signals whilst …
Audio-Optical Isolation Amp - audioXpress
https://audioxpress.com/article/Audio-Optical-Isolation-Amp
These optocouplers provide either an inverting or non-inverting transfer function, based upon the type of input and output amplifiers. The non …
G15396 - Audio Opto Coupler
https://www.goldmine-elec-products.com/prodinfo.asp?number=G15396
Detailed Description Tiny audio optocoupler is about the size of a pencil eraser and has 4 leads. These are used extensively in audio compressors, audio level controls, audio limiters, expanders/noise gates, guitar tremolo effects, guitar amplifiers …
Audio Optocoupler? | All About Circuits
https://forum.allaboutcircuits.com/threads/audio-optocoupler.102434/
Optocouplers can be a bit slow - maybe even for audio frequencies, so worth checking that detail on the data sheet before going ahead. Photo diode couplers are faster than photo transistor ones. If all you need is speech bandwidth, you shouldn't have much trouble. AnalogKid Joined Aug 1, 2013 9,484 Oct 16, 2014 #11
Optocoupler Operation - Learn About Electronics
https://www.learnabout-electronics.org/Semiconductors/opto_51.php
high speed digital optocouplers, usable at frequencies in the hundreds of khz and those used for audio operation usually use photodiodes as their sensing element because although some extra amplification must be provided, either externally or within the optocoupler chip itself, this is offset by having fast rise and fall times for digital …
Optocoupler Circuits | Nuts & Volts Magazine
https://www.nutsvolts.com/magazine/article/optocoupler-circuits
An optocoupler device can be simply described as a sealed, self-contained unit that houses independently-powered optical (light) Tx and Rx units, that can be coupled together optically. Figure 1 shows the basic form of such a device.
Optocoupler or Optoisolator for Audio | Forum for Electronics
https://www.edaboard.com/threads/optocoupler-or-optoisolator-for-audio.58629/
opto isolator audio This app note shows the analog optocouples for current sensing, which should work for audio too. https://www.maxim-ic.com/appnotes.cfm/appnote_number/1867 Mar 10, 2006 #6 K kgeorge123 Member level 1 Joined Mar 23, 2005 Messages 34 Helped 8 Reputation 16 Reaction score
What Is Optocoupler, Opto-coupler Working And Uses ...
https://circuitspedia.com/optocoupler-opto-coupler-opto-isolator-working-and-uses/
Although phototransistor optocoupler can pass the analog audio signals at wide frequencies by varying the LED beam that goes to the BASE of the phototransistor. The transistor output varies to amplifying as the light beam gets on its BASE. But …
Optocouplers - Working, Characteristics, Interfacing ...
https://www.homemade-circuits.com/optocouplers-working-characteristics-interfacing-application-circuits/
An optocoupler can be also effectively used for interfacing analog signals across two circuit stages by determining a threshold current through the IRED and subsequently modulating it with the applied analog signal. The following figure shows how this technique may be applied for coupling an analogue audio signal.
Optocouplers for DAC? | diyAudio
https://www.diyaudio.com/community/threads/optocouplers-for-dac.11886/
I intend to completely separate left & right analog and digital circuitry in my DAC, so I need to feed bit clock, data and word clock signals (768kHz word clock) through optocouplers without destroying all my effort for clean and low jitter clock signals. Can anyone recommend a readily...
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