XPost: sci.electronics.design   
   From: cd999666@notformail.com   
      
   On Sun, 13 Oct 2024 17:39:53 -0700, Dave Platt wrote:   
      
   > In article ,   
   > Cursitor Doom   wrote:   
   >   
   >>I've found an issue with the principal oscillator. It's generating   
   >>distorted sine waves. It's a wien bridge type using BJTs as the gain   
   >>element and fine tungsten filaments as thermistors, so should produce   
   >>near perfect sine waves before they're chopped and shaped by subsequent   
   >>circuitry, but since the fall, it's not.   
   >   
   > Is there a chance that the impact broke one of those fine tungsten   
   > filaments?  Do they read low-Z when cold, as they should?   
      
   It's one thing I need to look at, if only for the sake of completeness,   
   next time I have access to it. Since these are so hard to replace, I'd   
   really rather deal with my original suspicion that something got shorted   
   out in the fall.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)