From: pallison49@gmail.com   
      
   Ralph Mowery wrote:   
      
   ================   
   >   
   >   
   > I hooked a function generator set as square waves to 2 1000 ohm   
   > resistors for isolation.  From each resistor I went to a capacitor.  One   
   > was the Sprague  and the other was the poly something capacitor.  Then   
   > back to the ground side of the generator.   
   >   
   > A dual track Hanteck 200 mhz scope with 10:1 probes were hooked across   
   > the capacitors.  I started out at .1 Hz and went up to around 10,000 Hz.   
   > At all times the traces were almost identical.  They started out as   
   > almost perfect square waves as expected .  At a couple of hundred cycles   
   > the leading edge started to show a rounding off near the rise of the   
   > cycle (top of the trace)  and same for the negative part of the cycle.   
   > As I increased the frequency they started resembling sine waves.   
   >   
   >   
   ** That does  *NOT* happen  !!!!   
      
   With square wave input, a simple RC filer converts the wave to a TRIANGLE   
   shape if the frequency is high.   
      
   Your ancient Sprague ( Black Beauty ?) is almost certainly leaky due to   
   moisture ingress.   
      
   A DMM on ohms should show you that.   
      
   Forget Terrell's nonsense about wound and non wound cops -  he is just blowing   
   it out his arse as usual.   
      
      
      
   ....  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)