Quote:
Originally Posted by maxhifi
I keep looking at this thread, and can't keep my mouth shut any longer
1. Beautiful job on the cabinet
2. Awesome metal work
3. Why did you use a hot chassis? This thing could kill someone, and an isolation transformer capable of powering it is cheap, i.e. $20 at digikey or mouser. It would also prevent ground loop/hum issues during use, and make it a more useful test instrument.
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It's kind of hard to tell if the chassis is the B-. It looks like the negative on the electrolytic is connected to a B- line of the terminal strip.
It's easy enough to use an isolated B- line, bypassed to the chassis by a .1 mfd cap to the chassis. Maybe, that's what was done.
As a retired electrician, I can't stress enough that your work bench has a GFCI receptacle.
I make portable GFCI's, by using a plastic single device box, a three wire power cord and a GFCI receptacle.
Even if your place, doesn't have grounding receptacles, using an adaptor will give you the same protection, using the portable GFCI.
