PC Soundcard Oscilloscope buffer/attenuator. Especially for Visual Analyser.

You First Order Free at PCBWay: https://www.pcbway.com/
I have been using the Visual Analyser Soundcard Oscilloscope software for years, and have often thought of building a buffer to reduce input noise and protect the soundcard from excessive input voltages. Until now these thoughts had remained just that - thoughts.
I recently needed to test the frequency response of a tube radio and remembered this software, which has a really great spectrum analyser function. This again stirred up those 'thoughts', so I decided to do something about it. Hence this project.
The software is free, and very complete. It is really only useful for the audio frequency ranges with a top limit of 20kHz, but for this it works really well.
This video demonstrates the build using PCBWay boards, testing, and also a short circuit description. You can get the boards on the PCBWay share page, or follow the link below to build your own. Have fun.
https://www.pcbway.com/project/sharep...

You can now support the channel:
  / mcaldeira  
https://paypal.me/macaldeira

TimeStamps
00:00 SABA PC Soundcard Oscilloscope buffer/attenuator. Especially for Visual Analyser.
00:11 Introduction.
01:55 The built boards and description.
08:53 Testing the boards.
17:17 Connecting the finished project.
18:20 Testing with VA software.
26:02 Circuit description.
33:20 Closing.

#tuberadios #antiqueradio #radiorestoration

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