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Audio Optocouplers - Learn About Electronics
https://www.learnabout-electronics.org/Semiconductors/opto_53.php
in audio systems isolation between inputs and higher voltage/current equipment is usually provided by audio transformers, however it is also possible to use specialised audio optocouplers such as the il300, which uses an infra red led to illuminate one photodiode as an output device and a second photodiode to provide feedback, ensuring improved …
Audio-Optical Isolation Amp - audioXpress
https://audioxpress.com/article/Audio-Optical-Isolation-Amp
Audio-Optical Isolation Amp August 20 2015, 05:00 This circuit enables the full galvanic isolation of sound frequency signals with optical transmission in excellent quality, eliminating interference. When you connect audio components, interference may occur from various power and signal grounds.
Audio Isolation With Standard Optical Isolator ...
https://www.electro-tech-online.com/articles/audio-isolation-with-standard-optical-isolator.739/
Op amp U3 is configured as a current driver for the opto input, generating a current proportional to the voltage input. The opto is operated Class A with about 1 mA DC bias current. Op amp U5 is a buffer/non-inverting amplifier that amplifies the voltage across R2 to convert the opto isolator output current back to a voltage.
Amazon.com: optical isolator
https://www.amazon.com/optical-isolator/s?k=optical+isolator
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
Application Notes—Analog Optical Isolators - …
https://www.perkinelmer.com/CMSResources/Images/44-3429APP_AnalogOpticalIsolatorsAudioApps.pdf
Application Notes—Analog Optical Isolators Limiters If the magnitude of an AC signal varies over a wide range, it may be necessary to amplify or compress the signal before any audio processing can be performed. In other cases, the audio power has to be limited to prevent damage to an output device. Circuits that perform
What is "Opto-isolator"? - Sweetwater
https://www.sweetwater.com/insync/opto-isolator/
What is "Opto-isolator"? Opto-isolator By Sweetwater on Sep 22, 1997, 12:00 AM An electronic component that contains a light source, usually in the form of an LED, and a light sensing device. When current flows, the LED emits light, which is detected by the light sensor. Opto-isolators are used to replace switches and relays.
Optocoupler Circuits | Nuts & Volts Magazine
https://www.nutsvolts.com/magazine/article/optocoupler-circuits
typical isolating optocoupler applications include low-voltage to high-voltage (or vice versa) signal coupling, interfacing of a computer’s output signals to external electronic circuitry or electric motors, etc., and interfacing of ground-referenced low-voltage circuitry to floating high-voltage circuitry driven directly from the main’s ac power …
Audio Optocoupler? - All About Circuits
https://forum.allaboutcircuits.com/threads/audio-optocoupler.102434/
The OP stated it was for a Ham radio so it likely doesn't need to go over 5kHz for voice. But an opto with a phototransistor should be fine even for music audio if it is configured in a follower configuration, since the Miller capacitance that reduces the frequency response in a common-emitter configuration doesn't come into play.
List of touch-solution manufacturers - WikiMili, The Best ...
https://wikimili.com/en/List_of_touch-solution_manufacturers
An opto-isolator is an electronic component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 25 kV/μs.
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