Mike, You are absolutely correct about those fused line plugs. But I got to thinking about the philosophy behind those things.
Way back when, proper installation of radio gear was specified as including a ground - both RF and electrical. If the operator made the installation correctly, the chassis was always cold. I think the engineers of that time believed that the operator was going to be responsible and install that chassis connection to a real electrical ground. Just a thought. Was operator forethought and responsibility part of correctly using those plugs or were they just plain dangerous? Yours, de KA4JVY Mark --- Mike Dorworth K4XM <[EMAIL PROTECTED]> wrote: > Hi folks, just a little about the fused line plugs. You don't see them > anymore because of their killing ability, which is very good. All you need > is the fuse in the cold side of the line blown and of course the hot stuff > goes in through and all the way back to the open fuse meaning the entire > thing is full of juice waiting for a finger, might have been alright if they > were polarized which there were not and of course the sockets were not > either.. RIP with those literally.. 73 Mike K4XM > ----- Original Message ----- > From: Mark Foltarz <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Wednesday, February 26, 2003 3:57 PM > Subject: Re: [AMRadio] Series capacitor equalizing resistors > > > > Wayne, > > > > The other oddity of that period was of course the fused plugs that > Heathkit, > > Johnson and other manufacturers used. > > > > Come to think of it, do you suppose the cord on that particular AT-1 is > not > > original? I forgot if you described the schematic as specifically not > having a > > fuse anywhere including the line cord. > > > > Yours, > > > > de KA4JVY > > Mark > > > > > > --- Sara & Wayne Steiner <[EMAIL PROTECTED]> wrote: > > > Mark > > > > > > The AT-1 manual says 450v, however mine runs about 460v. So , yes you > are > > > right, the series combo has a rating of 700v which is substantially more > > > than what it sees. > > > As I mentioned earlier, the AT-1 has no fuse (mine will soon have one ). > My > > > AT-1 was a $5.00 flea market item which came without the power xfmr. The > > > corner of the chassis where the xfmr was mounted was covered with black > crap > > > where the xfmr obviously had a melt down probably due to a failed filter > > > caps and no fuse protection! > > > > > > 73 > > > Wayne, N0TE > > > > > > _______________________________________________ > > > AMRadio mailing list > > > [email protected] > > > http://mailman.qth.net/mailman/listinfo/amradio > > > > > > __________________________________________________ > > Do you Yahoo!? > > Yahoo! Tax Center - forms, calculators, tips, more > > http://taxes.yahoo.com/ > > _______________________________________________ > > AMRadio mailing list > > [email protected] > > http://mailman.qth.net/mailman/listinfo/amradio > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.455 / Virus Database: 255 - Release Date: 02/13/2003 > > _______________________________________________ > AMRadio mailing list > [email protected] > http://mailman.qth.net/mailman/listinfo/amradio __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, more http://taxes.yahoo.com/
