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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: High AC line voltage solutions posted by lugnut1 on March 23, 2015 at 10:01:19:
The solution is quite straightforward and should not cost more than $150-200 in parts plus some metalwork.
Implement the use of a 1KVA Toroidal Step-down transformer designed with a ratio very close to 1:1 but slightly less on the secondary than on the primary.
This helps shave off the extra pesky 3-5 volts AC some vintage amps just don't work well with.
An additional benefit is that you can create the solution with an inrush current limiter CL-70 for a soft start, a Slo-Blo 4 amps fuse on the primary so you operate the transformer safely at 50% rating.
On the secondary you can wire the unit as Balanced Power feed so each leg on the AC receptacle will have 60 Volts AC and produce
Vsec = 60V-(-60v)= 120VAC, the same three wire configuration as a standard utility U.S. Mains connection, except at half the voltage.
If you need a schematic and part list, let me know.
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- RE: High AC line voltage solutions - TimeConstant 06:00:33 03/27/15 (0)
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