More tubes (patchcord suggestion)

Harry Bissell harrybissell at
Thu Nov 25 07:17:31 CET 1999

Fot patchcords, why not use the shielded (jacketed) bananna plugs that Fluke
uses for their DVMs. They are safe enough for at least 500 or so volts, as they
are used for that in handheld meters. Don't know a source... maybe Pomona ???

:^) Harry (PS you're all still tube-crazy but enjoy, enjoy...) Bissell

media at wrote:

> At 2:43 PM -0700 11/23/99, Doug Tymofichuk wrote:
> >Greetings, all,
> >
> >Wow, there sure is a lot of excitement in tubeland these
> >days. :)
> You're excited??  Feel my nipples!! ;)
> >Over the weekend I built a dual VCO module based on Eric
> >Barbour's design.
> Where did you get the schematic??  How are you controlling it??
> >Construction was straightforward, mount
> >the tube sockets and connector strips, solder all the parts
> >in place, insert tubes, and power up. Worked flawlessly,
> >first time. Love that warm, rich sound!
> That's one of the advantages of building tube circuits -- you don't have to
> etch pcb's, which is the main reason I build so few things.
> >Patch cords are an issue I had not considered yet.
> >Converting all of the inputs and outputs to lower voltages
> >seems impractical to me, so maybe some type of mechanically
> >shielded connector would be needed to prevent electrical
> >shock. I was planning on using standard 1/4" jacks, I may
> >have to rethink that. Any suggestions for reasonably
> >priced, safe connectors? BNC perhaps?
> XLR might give you enough protection, but I still don't like the idea of
> massive control voltages.  One late night mistake and you could blow up one
> of your regular synths, or worse.
> >BTW, I have just been the lucky recipient of a couple of
> >boxes of old, surplus tubes. They contain everything from
> >diodes to pentodes, sub-miniature to high power, with nixie
> >tubes and photomultipliers as well, over 150 tubes in all!
> Wow!!!

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