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Elektor Formant Modular

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Re: Panick, Please Help 12v in VCO

2005-03-09 by Kris Bishop

Hi,
Sorry was just being stupid, sorted it out after posting question. 
That's all my parts ordered. To anyone trying to buy BC557C's their 
is a guy in China selling some but costing me £113 to get 32 of them 
shipped to scotland.

Kris

--- In ElektorFormant@yahoogroups.com, Dirk Vanden Berghe 
<dirkyformant@y...> wrote:
> Hi Kris,
> All boards get +-15V and if other voltages are needed they are 
changed on the board with 78- and 79-ers. Not the cheapest solution 
it is....
> I'm not doing this and made one major power supply with all the 
voltages I might need. I got hold of two industrial 24V supplies and 
derive -24V, -15V, -12V, +5V, +9V, +12V, +15V and +24V from it. Even 
have several modulars running on the same supply. 
> Dirk
> 
> Kris Bishop <bishopkris40@h...> wrote:
> 
> Hi,
> 
> I'm currently pulling in all the components I needed for my Formant
> MSS2000 to be built. Doing Ok so far.
> 
> Where does the 12v and 5v supply for the vco come from, Does IC4, 
and
> IC7 produce this? As I'm controlling my synth via a digital 
interface
> in the shape of a midijack I need only provid a board with a CV and
> Gate out which I planned to create with a couple of voltage 
followers
> and from there input these into the BUS system and use 3.5mm 
sockets
> on the bus access module to provide CV and gate outputs.
> 
> My real problem is will the VCO's run with just the normal +15 
and -15
> v  inputs as specified and create the relative voltages or do you 
need
> more supply voltages. (I think it looks as if they are created on 
the
> VCO boards)
> 
> I need to know as soon as possible as if I need to I will have to
> create an interface board.
> 
> Cheers
> Kris Bishop
> 
> 
> 
> 
> 
> 
> 
> 
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