rafafredd
Well-known member
OK, Here is the schem:
I want to have + - 28v and +48v from a single 48vac power transformer (In the schem, the signal generator is the secondary of the power transormer, 48vAC, 62.4v peak).
So, is it OK for the secondary of the power transformer to drive both bridges as drawn, one for +-28v and the other for +48v?
Or should it be needed to couple D4 bridge and the secondary of the power transformer using two 220uf (or greater?) caps?
Also, I wanna say that I like this kind of PSU. It´s an old version of JLM, but he used a 40-0-40v transformer with one side driving both +V and +48v phantom, and the other driving the -V only. So, I wanted to use a cheaper and easier to get locally 24-0-24v transformer, so I did this mod. The idea is to use the 24-0-24 as a single 48v, with the center tap floating. It´s for a quad mic preamp I´m working on.
Thanks!
I want to have + - 28v and +48v from a single 48vac power transformer (In the schem, the signal generator is the secondary of the power transormer, 48vAC, 62.4v peak).
So, is it OK for the secondary of the power transformer to drive both bridges as drawn, one for +-28v and the other for +48v?
Or should it be needed to couple D4 bridge and the secondary of the power transformer using two 220uf (or greater?) caps?
Also, I wanna say that I like this kind of PSU. It´s an old version of JLM, but he used a 40-0-40v transformer with one side driving both +V and +48v phantom, and the other driving the -V only. So, I wanted to use a cheaper and easier to get locally 24-0-24v transformer, so I did this mod. The idea is to use the 24-0-24 as a single 48v, with the center tap floating. It´s for a quad mic preamp I´m working on.
Thanks!