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Building 24V PSU for preamp use
Building 24V PSU for preamp use
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Old 5th December 2018, 06:14 PM   #11
JeffYoung is offline JeffYoung  Ireland
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Building 24V PSU for preamp use
48 VDC could be lethal, but not at the currents we're talking about. It's in case of a failure which delivers 230VAC on one of the outputs.

I was pretty lackadaisical about 3-prong outlets when I lived in the States, but I don't think I would be in a 230 VAC mains country. While you're at it, fix those outlets too!
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Old 5th December 2018, 06:26 PM   #12
MEPER is offline MEPER  Denmark
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The PE in the living room has been on my whish list.....
I also sometimes use my 300B amp which runs with 550 VDC and with 420 VAC from the trafo. 900 uF and 550 VDC can "do something"...….at least a burn mark. It is a bad smell of burned meat….so I have seen and smelled what happens…...but it was not my "meat"….or my amp.....it was a capacitor in a flash....so "only" about 400 VDC and 220 uF.
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