Copyright © 2007, 2008 AudioNote Kits
www.AudioNoteKits.com
audionotekits@rogers.com
Page 56
Check the voltage across any of the 36K resistors R40,
R41, R44, and R45 – all of these resistors should have a
120 volt drop across them – These are the plate resistors.
Then check the cathode resistors – R42 & R43 – measure
the DC voltage across these resistors and we should see
something in the 4.5V range.
With these tests done successfully, this ensures that the
tubes have proper DC conditions and will allow and audio
signal to pass through them as we move through the rest of
the build.
To Next Page
Loading...
