XPost: sci.electronics, design   
   From: cd@notformail.com   
      
   Returning to this Marconi signal generator which has a lot of ripple   
   on the (linear) PSU output, I managed to get probes through a barely   
   accessible crevice and get a couple of screen shots of the rectifier   
   outputs I'm seeing on the scope.   
    So there's mains incoming which goes into a toroidal transformer and   
   thence to the rectifiers. There are two secondary windings on the   
   transformer and they each get their own bridge rectifier. This is the   
   waveform that's being applied to the storage caps of the PSU (which   
   I've disonnected for testing purposes).   
   The outputs of neither rectifier look at all correct to me. What does   
   the Panel make of them?   
      
      
   https://disk.yandex.com/i/CP8qRMy-QA-fCg   
   https://disk.yandex.com/i/ubNazf1pFhuNtg   
      
   (probes are on 10x and I did compensate them first)   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)