If you only want to supply pads, thats okay, but PLEASE supply the
pads, polyswitches and diode locations for all 3 voltages. It should
be very easy to make all of the boards switch between using the +15
w/a regulator and using +5 direct by choosing between the regulator
and parts or the polyswitch and parts. I will point out that more and
more +5v components are showing up in our analog systems and probably
has a lot to do with MOTM moving to a 6 pin conector and a 3 voltage
supply.
Larry T.
--- In
ComputerVoltageSources@yahoogroups.com, Harry Bissell Jr
<harrybissell@...> wrote:
>
> Damn good idea.
>
> The polyswitch fuses can also improve on-card
> power supply filtering (by being slightly resistive)
> and cause a softer start on the power supply.
>
> H^) harry
>
> Grant Richter <grichter@...> wrote: Here is a practical idea.
>
> You have three pads labeled +V, Ground and -V. These go to
resetable polyfuses and
> 1N4001 diodes to protect the circuitry in case the 12 year old
science fair student hooks
> something up wrong.
>
> direct link to schematic:
> http://www.blacet.com/techPS.gif
>
> From John Blacets fine technical page.
>
> http://www.blacet.com/tech.html
>
> Then the end user can wire up ANY kind of connector he wants to
hook up to those three
> pads.
>
> The 1/3 square inch of board spaced used can substitute for the 2
square inches of board
> space it would take to support every possible connector type that
will probably change or
> go obsolete anyway, and who has all the mechanical drawings need
to make the custom
> PC board connector footprints? And who is going to take
responsibility for everything
> being correct with each connector type, and what if the
manufacturer changes the pinout
> or adds something new??????
>
> Just take an existing "fill in the blank" system power cable, chop
one end off and solder
> the appropriate three wires to the three pads on the CVS board and
be done with it.
>
> --- In ComputerVoltageSources@yahoogroups.com, "John Loffink"
<jloffink@> wrote:
> >
> > Good point. Here's what could be supported based upon PCB
stuffing options:
> >
> > Synthesizers.com 6 pin 0.100"
> > MOTM/Blacet 4 pin 0.156" add 5 V regulator
> > MOTM 6 pin 0.156"
> > Modcan 3 pin 0.156" add 5 V regulator
> >
> > Any others?
> >
> > John Loffink
> > The Microtonal Synthesis Web Site
> > http://www.microtonal-synthesis.com
> > The Wavemakers Synthesizer Web Site
> > http://www.wavemakers-synth.com
> >
> >
> > > -----Original Message-----
> > > From: ComputerVoltageSources@yahoogroups.com
> > > [mailto:ComputerVoltageSources@yahoogroups.com] On Behalf Of
Larry T.
> > >
> > > I would like to suggest that, if at all possible, we include
both the
> > > Blacet/MOTM 4 pin +/-15v power connector. and the Synthesizers.com
> > > +5/+/-15v 6 pin connector. The board could allow for the
optional +15
> > > to +5 regulators when using the 4 pin connector. Some of us
already
> > > have +5 in our systems, and generally, no matter how much
ANYTHING you
> > > come up with will use (short of a room heater), the +5v supply is
> > > never anywhere near being used to it's rated output. I note
that some
> > > of the newer MOTM boards also use a seperate +5v supply.
> > >
> > > I bring this up in part because of the LED/LCD/VFD
discussions, and
> > > partly because the MPU in consideration has requirements for
+5v, and
> > > I really don't want to add more +15 to +5 regulators to my already
> > > stressed out +15v supply, when I have 4-6A of un-touched +5 just
> > > sitting around asking to be used.