| Electronics > Projects, Designs, and Technical Stuff |
| Planning to build benchtop 500V tube PSU, help needed. |
| << < (3/19) > >> |
| Wolfgang:
Hi, have you seen that there are books full of PSU designs for tube audio, like this one: Valve Amplifiers, by Morgan Jones or have a look at this thread of EEVBlog: https://www.eevblog.com/forum/projects/overhauling-high-voltage-vacuum-tube-(valve)-power-supply/msg389145/#msg389145 play safe, have fun. Wolfgang |
| David Hess:
For practical reasons I would use silicon diodes to replace the rectifier tube and zener diodes to replace the voltage reference tube. The same configuration with a single pass transistor and single transistor error amplifier was common in early power supplies. |
| TERRA Operative:
But practical is less fun! :D I'm looking at the C-L-C filter section at the moment, and 8uF, 600V capacitors are a bit hard to come by... How much leeway do I have to substitute values (and the 10H choke too)? |
| 001:
--- Quote from: TERRA Operative on December 14, 2018, 10:55:05 am ---But practical is less fun! :D I'm looking at the C-L-C filter section at the moment, and 8uF, 600V capacitors are a bit hard to come by... How much leeway do I have to substitute values (and the 10H choke too)? --- End quote --- it is wery difficult at XXI century Do You Really NEED 500V output? |
| Wolfgang:
You need two 450V caps in series with equalizing resistors. No big deal. |
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