geoffkait I’ve had about a dozen fuses...They go in and stay in until I melt themJust because it was deleted doesn’t mean you never said it.
You’re obviously not at all familiar with the First Watt products. You know... Like the J2 that got Stereophile’s Amp of the Year award. Mine is a modified clone of the F5. The power supply in it is actually more muscular than what Nelson built the First Watt F5 with. The fuse pops at 300 watts like in all FW amps, but because mine runs 32V rails instead of 24V at the same 120,000uF reservoir capacitance, the in-rush current is a bit higher.
Like I said above, my amp uses very simple in-rush current limiting. In-rush current is the amount of power the amp draws when you turn it on. My amp uses nothing more than a pair of NTC CL60 thermistors to limit the in-rush
I’ve had plenty of fuses blow because my amp has a massive power supply and the most basic in-rush current limiting. I’ve gone through about half a dozen this year.
How do like these apples, er, facts? You said it. You took a nice design and changed it to suit your fancy. Stop hiding behind Nelson Pass’s work. And while we're at it, why don't you email Nelson Pass and see how he feels about your mods to his design? I'm sure all here would love to know his views.
All the best,
Nonoise