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Audio Signal Detector/Switch Circuit - DiscoverCircuits.com
http://www.discovercircuits.com/H-Corner/audiosignal%20detector%20switch.htm
Audio Signal Detector/Switch Circuit designed by David A. Johnson, P.E. For some audio systems it is desirable to have an automatic switch circuit turn on other devices, such as an Amplifier, if an audio signal is detected on one line. The hobby circuit below will activate a
Audio Detector Switch - EasyEDA
https://easyeda.com/guest/Audio_Detector_Switch-yYuM4mfxP
Description. Two similar circuits: A) Automatic input selector: If input A is connected to the output, if input B has audio signal the circuit switches to input B. B) Detect audio signal to switch relay on and after some time off again when the music has stopped.
3 Sound activated switch and Detector Circuit with PCB ...
https://www.eleccircuit.com/sound-activated-switch-circuit/
Sound activated switch. This is Sound activated switch Circuit with PCB using IC-1458 and SCR-C106D. It will work only if the loud is overdue. Ideal for player cameras Or you can bring it to other users. It’s not Fouls, such as You may also be applied to a Burglar alarm circuit effectively, or applied to the alarm clock, when it has sounds high level.
Circuit: Audio Signal Detector Switch__ Circuit designed ...
http://discovercircuits.com/DJ-Circuits/audiodetect1.htm
Audio Signal Detector Switch This circuit will activate a transistor switch when it detects at least 50mv peak to peak of an audio signal. It could be used to turn on a relay, routing the signal to were it is needed. Click on Drawing Below to view PDF version of Schematic More
Stereo Audio Switch Circuit - ElectroSchematics.com
https://www.electroschematics.com/stereo-switch/
switch This stereo audio switch circuit allows that with only one switch to select one of the four stereo channels. The internal switching is made posible with CMOS components. Each switch input includes a voltage divider to allow the switch to work in the linear zone of the characteristics, this ensures low audio signal distorsions.
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