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Audio-Optical Isolation Amp - audioXpress
https://audioxpress.com/article/Audio-Optical-Isolation-Amp
Audio-Optical Isolation Amp. When we connect audio components, interference may occur from various power and signal grounds. This circuit enables the full galvanic isolation of sound frequency signals with optical transmission in excellent quality, eliminating interference. This article was originally published in audioXpress October 2004.
Optocoupler Circuits | Nuts & Volts Magazine
https://www.nutsvolts.com/magazine/article/optocoupler-circuits
An optocoupler can be used to interface analog signals from one circuit to another by setting up a standing current through the LED and then modulating this current with the analog signal. Figure 17 shows this technique used to make an audio-coupling circuit. FIGURE 17. …
Linear opto isolator circuits – Electronic projects circuits
https://www.eleccircuit.com/linear-opto-isolator-circuits/
This is the linear opto isolator circuits that use a few parts and cheap. In circuit we use the opto compiler ICs number of MOC 5010 as a base. It can use it in many ways. For example, separate the circuit from the power line, send an audio signal, Electronic medical, etc. Working of Linear opto isolator circuit
Audio Optocouplers - Learn About Electronics
http://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 isolating the input and output circuits. An LM324 op amp is used here to drive the LED input of the 4N25.
Optocoupler or Optoisolator for Audio | Forum for Electronics
https://www.edaboard.com/threads/optocoupler-or-optoisolator-for-audio.58629/
Kender, the purpose was to eliminate the ground loop issue. But finally I concluded that none of the current analog optocoupler are good for this application ( audio groud loop isolation) because of their lower SNR of -80dB and ageing effect in the optoisolator. Typically isolation transformers are used.
What Is Optocoupler, Opto-coupler Working And Uses ...
https://circuitspedia.com/optocoupler-opto-coupler-opto-isolator-working-and-uses/
Optocoupler/Optoisolator Opto-coupler is an electronic component that is used to conduct the electrical signals from one circuit to another circuit without directly connected between them. In other words, an optocoupler is used to transfer electrical signals between two circuits optically. Here both circuit is electrically isolated from each other.
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