Audio Frequency Isolation Circuit

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Railway Audio Frequency Track Circuits – Railway ...

https://www.railwaysignallingconcepts.in/railway-audio-frequency-track-circuits/#:~:text=It%E2%80%99s%20a%20type%20of%20AC%20track%20circuit%20in,used%20in%20ac%2C%20dc%2C%20and%20non%20electrified%20areas.

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Your own audio isolator - Audio | Video | Circuits

https://www.epanorama.net/documents/groundloop/audio_isolator_building.html

The transformer which is used should have very flat frequency response over the whole audio frequency range (20Hz..20kHz) and even more. This kind of isoltion transformer circuit should be best connected on the receiving end (equipment …

Audio-Optical Isolation Amp | audioXpress

https://audioxpress.com/article/Audio-Optical-Isolation-Amp

This circuit enables the full galvanic isolation of sound frequency signals with optical transmission in excellent quality, eliminating interference. …

Audio line isolation transformer - Audio | Video | Circuits

https://www.epanorama.net/circuits/audio_isolator.html

The frequency measurements were made with Nacamichi T-100 Audio Analyzer and the isolator circuit was connected between it's 600 ohm output and 50 kohm input. I don't know if EOP Z1612 transformers are still available at Farnell , but you can try.

Audio isolators - ePanorama.net | Audio | Video | Circuits

https://www.epanorama.net/documents/groundloop/audio_isolators.html

The simplest and most common way to do the isolation is use audio transformer. Usually when you install an audio galvanic isolation (any type) to almost any place in the audio cable connection is solves the ground loop caused humming problem nicely. Possible isolation components. The most suitable component for audio line galvanic isolation is audio transformer.

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