Re: Heads Up for Power Supply deal...

That is usually OK but it is also an easy way to kill power supplies if they are not designed correctly. For example, if the fuse
blows in one supply the other one will feed power backwards into the one that is not turned on and often kill it.

One way to protect them is to put a power diode (that can handle the max current) backwards across each output. That will limit
the reverse voltage to one diode drop.
Bertho Boman
==================================================

> From: hansw <hansw@...>
>
> Hi Carlos,
> Good question, and I think that should be possible.
> It is a switch mode supply, which means it has 100% isolation from the input, so that's the first thing solved.
>
> When you do connect in series, you will have one of the power supplies (negative) connection effectively at half voltage, and
> only need to make sure you never "ground" it...
>
> Connections would be like this
>
> Positive from Supply #1 become the 36 Volt connection
>
> Negative from Supply #1 never consider this as ground !
> | connect together
> Positive from Supply #2
>
> Negative from Supply #1 becomes the 0V connection
>
> I expect already know all of this. Also remember the negative is often also part of the circuit board screw mounting holes, and
> you need to isolate that #1 supply,
> for example mount it on Nylon spacer.
>
> It should work, no reason why it will not.
>
> regards
> Hans Wedemeyer
>
> Carlos Guillermo wrote:
>
> > From: "Carlos Guillermo" <cnk@...>
> >
> > Hans -
> >
> > Any way to double those up effectively for 36V?
> >
> > Carlos Guillermo