From: jeroen@nospam.please   
      
   On 2021-08-26 08:36, Phil Allison wrote:   
   >   Jeroen Belleman wrote:   
   > ===================   
   >>   
   >>> ** You did have a suitable resistive load on the secondary ??   
   >>>   
   >> Just the 50 Ohm ports of my network analyzer.   
   >>   
   >   
   > **  So you paralled the windings or had them in series ?   
   >   
   >   15V or 30 V ?   
   >   
   >   Suitable =  close to full VA *if* the primary was operated at rated V.   
   >   
   > Unloaded trannys always ring like a bell.   
      
   An RF network analyzer is a voltage source with a 50 ohm internal   
   impedance and a receiver with another 50 Ohm internal impedance.   
   I connected the source to one of the 15V windings of my transformer   
   and the receiver to the other. The source voltage is well below 1V   
   rms. Pretty far from the normal operating conditions of the transformer,   
   is true.   
      
   Jeroen Belleman   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)