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Auto-Sensing Switches - Caron Building and Rental Center
https://caronbuilding.doitbest.com/shop/electrical/switches-outlets-and-wall-plates/auto-sensing-switches
Our attitude toward business has revolved around the appreciation of people both as valued customers and employees and will continue to do so to maintain its company’s success.
Auto sensing on/off switch | diyAudio
https://www.diyaudio.com/community/threads/auto-sensing-on-off-switch.334994/
I am looking for a switch that senses the line-level audio signal, switches on an amplifier when there is a signal, and turns the amplifier off when there is no signal for a while. Yes, there is the Rod Elliot #38 circuit, which does exactly that ("Signal Detecting Auto Power-On Unit"). However, I am too lazy to make a PCB for it.
Automatic SPDIF (Optical/RCA) Audio Switch from Beni_Skate ...
https://www.tindie.com/products/Beni_Skate/automatic-spdif-opticalrca-audio-switch/
Optical/SPDIF Audio Switch with automatic input detection (it will automatically switch to the input where a signal is coming - if there is a signal on 2 or more inputs the inputs are prioritized - it will always prefer input 1 before input 2 and so on) 4 optical inputs and 3 coax inputs (RCA or BNC plugs) or 7 optical inputs.
Amazon.com: AUTOMATIC SPEAKER SWITCH, 200W, …
https://www.amazon.com/AUTOMATIC-SPEAKER-SWITCH-200W-12VDC/dp/B00L9YVJ0Q
When an audio signal is detected at INPUT-B, the switch automatically switches to that input. When INPUT-B is is silenced, the output automatically reverts back to INPUT-A. The delay time for reverting back to INPUT-A is adjustable from 0.5 seconds to two minutes. New (3) from $89.95 & FREE Shipping .
Amazon.com: current sensing switch
https://www.amazon.com/current-sensing-switch/s?k=current+sensing+switch
Automatic RCA audio switch? | Audioholics Home …
https://forums.audioholics.com/forums/threads/automatic-rca-audio-switch.114160/
The way I want to go about that is to automatically switch to the primary (Jukebox) if a song is playing, otherwise play from another audio source (mp3 or cd). One of these devices should be what you are looking for: Switch, Automatic, Speaker/Line Level, Two Way, 12 VDC, 100 mA, 3.5mm Connector
signal detecting auto power-on unit, audio signal ...
https://www.pinterest.com/pin/684828687064473101/
Oct 17, 2018 - Amplifier Auto Power ON Signal detecting auto power-on unit, audio signal controlled relay switch module, amplifier auto power on, audio sensing power switch, audio detector switch, audio signal detector circuit, line level audio detection circuit, audio triggered power switch part : BC547 , BC557, LM358, Relay Audio
Auto sensing on subwoofer | AVForums
https://www.avforums.com/threads/auto-sensing-on-subwoofer.1692254/
There is no physical on/off switch as it works purely by auto on/off. What is supposed to happen is that it powers on when sensing a signal but turns off again when no signal is detected for a certain length of time (15 mins or 30 mins, can't remember the exact). In the past I mainly left it plugged in but would maybe unplug it over night.
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