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 _____HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM____ DIY TEST GEAR: The title says it all:    • Zener Diode Tester - Part 1. The build.   RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:    • How to safely check the Power Transformer ...   HowTo's: Various videos on some simple techniques and projects:    • Extend tube radio FM band above 100MHz wit...   See also playlists on some other completed restoration projects. PHILIPS BX750A:    • Philips BX750A tube radio restoration - Pa...   TELEFUNKEN OPUS 2114:    • Telefunken Opus 2114 stereo tube radio res...   SABA UW-175-Z 3D:    • Saba UW 175-Z 3D tube radio restoration - ...   GRUNDIG 1070:    • Grundig 1070 tube radio restoration - Part...   SCHAUB-LORENZ GOLDY 58 type 3020:    • Schaub-Lorenz Goldy 58 type 3020 tube radi...   BUSH VHF64:    • Bush VHF64 tube radio restoration - Part 1...   GRUNDIG 3060A:    • Grundig 3060a tube radio restoration - Par...   TELEFUNKEN OPERETTE 8:    • Telefunken Operette 8 tube radio restorati...   GRAETZ SUPER 171W:    • Graetz Super 171W tube radio restoration -...   LOEWE-OPTA MAGNET 3737W:    • Loewe-Opta Magnet 3737W tube radio restora...   BRAUN ATELIER 3:    • Braun Atelier 3   LOEWE-OPTA TRUXA STEREO 4741W:    • Loewe-Opta Truxa Stereo 4741W   GRAETZ COMEDIA 616:    • Graetz Comedia 616 tube radio restoration ...   SABA FREIBURG W2:    • Saba Freiburg W2 (WII) restoration   GRAETZ MUSICA 4R417:    • Graetz Musica 4R417 restoration   You may also be interested in ... CAPACITOR LEAKAGE TESTER:    • Capacitor leakage tester design & build DI...