Is that really a 10000uf cap on the bridge rectifier? Just checking, since I'm about to order a replacement.
man, that cap must be the size of me.!!
Are you looking at a schematic or the actual cap? If it's the actual cap, it's pretty obvious. A 1000uF cap seems more likely to me, though...
doesn't sound too wacky if it's for a DC filament supply. I built a Vacuum Tube Valley (magazine) preamp project once, and IIRC there were two 10,000uFs, plus two (maybe 3.3F?--an even larger value) caps for the DC filament supply (for only one tube).
Quote from: Dai H. on December 05, 2006, 08:11:09 AM
doesn't sound too wacky if it's for a DC filament supply. I built a Vacuum Tube Valley (magazine) preamp project once, and IIRC there were two 10,000uFs, plus two (maybe 3.3F?--an even larger value) caps for the DC filament supply (for only one tube).
:o Man ! that must be huge enough ! Do we need such a big value for just one tube ? ;D
But nowadays caps body is becoming smaller and smaller each day with such a big value. What i remembered last week is, i try to find replacement filter cap for my Marshall superlead, But it seems like nothin' ever fitted into the caps holder! i ended up using JJ's cap :D
10,000 uF is not unreasonable there. They need the oversized cap to jack up the voltage if they're trying to use a 6.3VAC tranny to get 6.3VDC after rectification and filtering.
These are not crazy large at the 10volts or so you need.
Ron
Thanks for the replies. As usual, this group is always very helpful.
I used 2200uF before regulator and 1000uf after
Maybe it's a bit overkill, but couldn't hurt :)