Re: MOT-PSU

["Herwig Roscher" <herwig.roscher-at-gmx.de> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Malcolm Watts wrote to the list:

> Be aware that the high voltage winding can exhibit resonances 
> (well both do actually) but the resonance/s in the secondary 
> can occur near the test frequency due to the large inductance 
> and self-capacitance in the secondary and if this winding is 
> loaded merely with a scope probe i.e a megohm and a few pF, 
> its Q can be quite high.

Malcolm,

This could be the reason for the difficulties in determining the 
voltage radio and explain why I've found clear differences between 
measuring "forward" and measuring "backward".

Thank you.

Herwig