Thread: Home brew TRF
View Single Post
Old 3rd Nov 2005, 4:16 pm   #17
Norm_Leal
Retired Dormant Member
 
Join Date: Jan 2003
Location: Livermore, California, USA.
Posts: 139
Default Re: Home brew TRF

Hi Lee

Very nice job. You used ST 6J5's. These sell for more than other shaped valves.

Manufacturers don't try to make 1N4001 diodes. They go for the highest PIV possible then mark parts as to breakdown. You were lucky. When there is a demand for 1N4001 higher PIV diodes are just marked with this number.

When selecting diodes at least double the peak AC voltage. Since your transformer is 270 volts you need diodes rated greater than 764 volts. (270 x 2.828)

Norm
Norm_Leal is offline