[sdiy] FW: earthing??

[Matthias.Herrmann at jeppesen.com]

synth-diy-bounces at dropmix.xs4all.nl wrote on 11/25/2008 03:08:06 PM:
> 
> no you were right
> 
> maybe i worded it wrong
> 
> when the reglators ARE touching the bottom, it doesnt work
> 
> when they arent and the case is touching the PSU on the PSU's side...it 
works.
> 
> i hadnt even thought about the fact that the regulators could short 
> out the system by touching
> 
> the part number is
> 
> Haa15 08

some additional info you might not find elsewhere:
http://www.modular.fonik.de/pdf/HAA15.pdf
(the mannesmann rexroth is structurally identical)

cheers,
matthias
___
www.modular.fonik.de



> 
> anyone know what size screws i need to mount this (with the built in 
holes?)
> 
> thanks all
> 
> --------------------------------------------
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> 
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> 
> 
> http://www.soundclick.com/lossnyc.htm
> 
> 
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> 
> 
> > Subject: RE: [sdiy] FW: earthing??
> > Date: Tue, 25 Nov 2008 13:12:49 +0000
> > From: Jason.Tribbeck at ascom.com
> > To: subjectivity at hotmail.com; synth-diy at dropmix.xs4all.nl
> > 
> >> it seems when it is flat, the only thing properly touching the case 
is
> > the
> >> tip of the regulator heatsinks (i think thats what they are)
> > 
> > From memory, the 78xx tab is connected to ground, but the 79xx tab is
> > connected to the input voltage. If both of them are effectively 
shorting
> > (through the heatsinks), then that could cause problems.
> > 
> > However, I would expect the opposite - i.e. it won't work if they're
> > connected.
> > 
> > Do you have a part number for the PSU? I'm just guessing what could be
> > wrong here....
> > -- 
> > Jason Tribbeck
> 
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