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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Using a CL inrush current limiter to lower B+ posted by DAK on August 29, 2017 at 09:42:12:
The other posters have given you reasonable options. A cLC filter, with a hefty inductor, allows you to tweak the small 1st cap. to get the rail voltage "just right". Bucking the power trafo primary is also good, provided no filament windings are present.
A 3rd possibility is switching to hybrid bridge rectification, to take advantage of the large forward drop vacuum rectifiers exhibit. Remember, the forward drop of a 5R4, at the rated 250 mA., is a whopping 67 V.
Eli D.
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Follow Ups
- RE: Using a CL inrush current limiter to lower B+ - Eli Duttman 07:01:08 08/30/17 (5)
- I have already tried the cLC and hybrid options - DAK 09:31:08 08/30/17 (4)
- RE: I have already tried the cLC and hybrid options - Eli Duttman 14:55:20 08/30/17 (3)
- Just to be sure.... - DAK 15:22:56 08/30/17 (2)
- RE: Just to be sure.... - Eli Duttman 16:18:27 08/30/17 (1)
- Ok, gotcha, thanx! nt - DAK 17:31:29 08/30/17 (0)
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