I have a bunch of old tube equipment. I mostly want to repair old guitar amps. Will the AD3 be useful for this? I have a few old Oscilloscopes etc.. to repair also. Or would I be better off with a cheap new scope.
Thanks
What is an AD3 (analog discovery 3) please ? What does it do ?
@ovi4 Seems to do about everything interfaced through your computer.
Analog Discovery 3 – USB Oscilloscope and Logic Analyzer
@ovi4 This is what i found.
@rs-electron Oh… tnx for clarifying the mystery. I never new such thing ever existed though :)))
I have a AD2 it uses the same software as AD3. It’s mainly for digital stuff, 5V or lower signals. It’s great when programming MCU’s. You can inject digital signals and look at digital outputs on your computer at the same time you are coding.
When in doubt use a microcontroller.
My suggestion is no. I think you would be better off looking towards a working used full desktop analog scope from somewhere like Ebay or other websites trading used / recycled equipment. The AD3 is really intended for ELV and Digital, not mains powered devices, power supplies and amplifiers. A lot of the work on old guitar amps will be valve based with significant voltages present. Not only would/could the AD3 be damaged by the voltages used in valve amplification, it’s also potentially dangerous to yourself if you are learning. At the AD3 pricing you would be better off buying mid-end China built desktop scopes like Rigol, Uni-T, Owon or Hantek, but not the tablet or USB types they offer, USB scopes and tablet scopes are generally not mains rated, although they might be used with mains in combination with special and very expensive probes that is not a beginner task.
Although neat, I would agree that a basic oscilloscope and volt meter would be more than enough for that kind of gear. The best thing about amplifiers is there isn’t much to it, take a small signal and make it bigger. Compared to a radio, TV, or other piece of gear which has many stages and sections which need exact signals and specific alignments.
Radios + Tubes + Scopes + Cars= Nothing better!
Just as a FWIW, (and should anyone happen to have access to an AD1,2 or 3) there is a gent on YT who has written the scripts that run the unit as an Audio Suite or an Impedance Analyzer within the Digilent “WaveForms” SDK. He provides his software as a free download & info about design/making the needed connection i/o breakout boards… I have found it a great learning & experimenting tool (especially the Impedance Analyzer) that has helped me visually understand the concepts around resonance of an inductor shunted with a cap especially when following Mr Carlson’s videos on receivers & their RF Alignment. Have a search on YouTube for TheStuffMade.

