ComputerVoltageSources

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.