Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Normal
I just found my old note book from 2006. I tested 32 NOS 6AU6. I measured cathode and plate volts with them strapped as a triode, One with screen grid, suppressor and plate strapped and then with the screen grid as the plate and the other two grounded. I also measured gm, rp and mu. I separately measured the noise. This must have been before I got the Ferrograph because I was estimating rms noise voltages from the peak to peak value of the waveform seen on a scope..CheersIan
I just found my old note book from 2006. I tested 32 NOS 6AU6. I measured cathode and plate volts with them strapped as a triode, One with screen grid, suppressor and plate strapped and then with the screen grid as the plate and the other two grounded. I also measured gm, rp and mu. I separately measured the noise. This must have been before I got the Ferrograph because I was estimating rms noise voltages from the peak to peak value of the waveform seen on a scope..
Cheers
Ian
