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Old 17th December 2002, 03:33 PM   #11
Bas Horneman is offline Bas Horneman  Netherlands
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Originally posted by Gunderz
I use resistors(470k) to ensure half the supply voltage over each capacitor, but maybe I should have a bleeder too?

I'm currently using two Rifa PEH200 with a voltage rating of 350V.

And for my own security I uses gloves while working, and... one hand at my back while the other is working
No..I don't think you would need a bleeder in that case...
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Old 17th December 2002, 09:35 PM   #12
Gunders is offline Gunders  Norway
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I just had an idea....

Bas Horneman said that the reason for the voltage peaks is because none of the diodes is conducting.

But I had this idea about SMPS, in SMPS we often find LC-filters at their ouptus. And we also have a transistor as a switch, open-closed.
But during the time the transistor is open the choke got a current path through a switchdiode, if the switchdiode had been removed we wouldn't have a current path for the choke and large voltage peaks had been devoloped by the choke.

But couldn't this be transfered to the LC filter used in my power supply, to provide a current path for the choke while none of the diodes is conducting I could use a switchdiode between the input at the choke and earth, for example UF4007.
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Old 20th December 2002, 02:09 AM   #13
hagtech is offline hagtech
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