Somewhat OT Knob & Tube wiring (was Re: Power and the RA82)

was our tester crawling under a tank? -----Original Message----- From: Roger Merchberger <zmerch at 30below.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Date: Tue, 12 Jul 2005 15:51:26 -0400 Subject: Re: Somewhat OT Knob & Tube wiring (was Re: Power and the RA82) > Rumor has it that Vintage Computer Festival may have mentioned these > words: > >On Tue, 12 Jul 2005, Curt @ Atari Museum wrote: > > > > > Still burns and leaves the God-awefullest metal taste in your mouth > when > > > you get hit with a ring surge, You sure its AC? Doesn't make > sense, > > > but voltage on my meter would jump up from 48-52vdc to around > 78-80vdc > > > on the DVM > > > >Yes, it's AC. That's why it hurts. DC would feel strange perhaps but > not > >like AC. The reason you saw voltage at 80VDC is because your digital > >meter samples slowly. > > Or -- some meters when set to DC and fed AC will measure the RMS [kinda > DC-equivalent value] voltage of the AC... > > 100+V AC * .707 = 70+V DC. > > The equation for figuring RMS voltage on sine-wave AC is: > 1/sqrt(2) > > > Just a thought, > Roger "Merch" Merchberger > > -- > Roger "Merch" Merchberger | Anarchy doesn't scale well. -- Me > zmerch at 30below.com. | > SysAdmin, Iceberg Computers >