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Pins and +5 volts from the power supply?

Pins and +5 volts from the power supply?

2001-12-23 by Bret Truchan

Season's greetings everyone!

I'm experimenting with creating my own modules and ran into a big unknown.  
The rack frame and power supply should supply +5 volts and +/- 12 volts.  
However, it *seemed* (and I probably did something wrong) that the +5 volts 
was not there.  To check, I built a simple circuit with a resister, and used 
a volt meter to check the presence of the +5 volts.  Nada.  This seems 
strange, because all my modules are working just fine.

The LED next to +5 volts isn't on.  The LEDs near +/- 12 volts is on.  
Perhaps those LEDs turn on only when a module uses that power source?

Does anyone have experience in tapping into this +5 volt source?  Can 
someone instruct me how to build a simple circuit that uses this power 
source?

Much thanks!  I'm obviously more ambitious than experienced...
- Bret

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Re: [Doepfer_a100] Pins and +5 volts from the power supply?

2001-12-24 by bakis Sirros

hi,
as far as i know ,from my doepfer racks, the 5v led
lights up only when you have connected in the
bussboard the low cost 5v adapter(and,possibly the 5v
power supply..i don't have one of the latter...)
so,everything is o.k,the only modules that need the 5v
supply are the a190,a191,a113.all the others need only
the 12v supply.
synthfreak

--- Bret Truchan <clone45@hotmail.com> wrote:
> 
> Season's greetings everyone!
> 
> I'm experimenting with creating my own modules and
> ran into a big unknown.  
> The rack frame and power supply should supply +5
> volts and +/- 12 volts.  
> However, it *seemed* (and I probably did something
> wrong) that the +5 volts 
> was not there.  To check, I built a simple circuit
> with a resister, and used 
> a volt meter to check the presence of the +5 volts. 
> Nada.  This seems 
> strange, because all my modules are working just
> fine.
> 
> The LED next to +5 volts isn't on.  The LEDs near
> +/- 12 volts is on.  
> Perhaps those LEDs turn on only when a module uses
> that power source?
> 
> Does anyone have experience in tapping into this +5
> volt source?  Can 
> someone instruct me how to build a simple circuit
> that uses this power 
> source?
> 
> Much thanks!  I'm obviously more ambitious than
> experienced...
> - Bret
> 
>
_________________________________________________________________
> Get your FREE download of MSN Explorer at
> http://explorer.msn.com/intl.asp.
> 
> 


=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner-moderator

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