Paul helped me to configure a Power One HAA15-0.8-AG supply for +/-15
volt outputs. It required cutting a jumper to change from the default
+/-12V. I described the project here.
http://pugix.com/synth/portable-rack-cabinets/Richard Brewster
Paul Schreiber wrote:
> Bench triple supplies generally use a ∗variable∗ +_ supply (usually 0 to 20V) and a variable 0 to +6V supply. MOTM uses +-15V because that allows more headroom than +-12V (Euro standard). Can you run MOTM modules off +-12V? The anser is yes BUT (and this is a BIG BUT) you will not get the expected results. Can MOTM modules be modified to work on +-12V? The answer is yes BUT every module will have to be individually modified in different ways, some are a LOT of work while other may be 3 resistor changes.
>
> There are 100s of variable triple supplies on ebay.
>
> {aul S.
>
>
> --- jackv@... wrote:
>
> From: Jack VanAken <jackv@...>
> To: MOTM List <motm@yahoogroups.com>
> Subject: [motm] Power supply newbie type question
> Date: Tue, 13 Oct 2009 20:43:05 -0700
>
> I've been -gradually- getting started on the DIY side of things and
> have relied considerably on the
> (no longer available, but I saved a copy,) Synth Tech Tutorial/
> Resource page for tool suggestions, and I have been wondering
> about Paul's recommendation: "A stable, regulated power supply for
> testing. I STRONGLY suggest buying a linear supply.
> It needs to be a "triple output" (+5, +12, -12). I like the Elpac
> Model WM220-1."
>
> Question, why/how is a +12/-12 PS acceptable when MOTM (format)
> modules are rated for +15/-15?
>
> tia,
> Jack
>
>
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