FW: Tube Power Supply and Prototype Board Setup

[McIntosh, Malcolm]

If this gets to Synth-DIY then Rick J has fixed my posting problems!

Thank you very much Rick!

Malcolm

> -----Original Message-----
> From:	McIntosh, Malcolm 
> Sent:	Tuesday, February 01, 2000 9:21 AM
> To:	synth-diy at mailhost.bpa.nl
> Subject:	Tube Power Supply and Prototype Board Setup
> 
> All interested in tube synthesis,
> 
> I have made Eric Barbour's tube +/- 150V power supply (schematic:
> http://www.synthfool.com/diy/ebps.gif).  It works great.  I added a couple
> of 1500MFD, 200 volt capacitors to the high end.  This smoothed things out
> till I couldn't see any ripple at +/- 150V on my scope.
> 
> I have also constructed a tube prototype bench.  This was made as follows:
> 
> I cut 2 square aluminum tubes 18 inches (45.7 cm) long, drilled holes
> approximately 1 inch (2.54 cm) apart and taped them.  I mounted chassis
> mount tube sockets via these taped holes.  I mounted the square tubes on a
> large piece of particle board.  All the tube sockets were wired with that
> multi-colored telephone wire stuff they use here in the sates.  It's a
> solid wire, and I color coded the connections so I could easily tell which
> wire went to the plate, etc....  Finely, I mounted the PS on the particle
> board and mounted a couple of your typical prototype socket boards too.
> 
> Works great.
> 
> I have not zapped myself while prototyping yet.
> 
> The VCA sounds very warm!
> 
> Turned out the lights and looked at the glow.
> 
> Malcolm