PFC capacitor for a MOT

Does anybody know how to calculate the correct PFC capacitor value for a

In microwave ovens there is no PFC capacitor but I got the feeling that my
10A fuse blows (when I don't use any shunt) because I miss one.

I use two MOT with primaries in parallel, and a single MOT in series (with
secondary shorted) as a shunt.

How to calculate a suitable PFC capacitor value?


 Marco Denicolai                   Vista Communication Instruments, Inc.
 Hardware Development Manager      www.vistacom.fi   

 marco-at-vistacom.fi                 Kaisaniemenkatu 13 A
 fax:    +358-9-622-5610           SF-00100 HELSINKI
 phone:  +358-9-622-623-15         Finland

   Remember, Murphy was an optimist! I am not...