[sdiy] Buffering Busses?

[Seb Francis]

You should use low output impedance buffers (to avoid voltage drop from 
connecting multiple things), but maybe you have them already in the 
output stages of your midi to CV module?

Remember also that any input voltage offsets in your buffer opamps will 
cause errors in your cv voltages - not so bad if the voltage offsets are 
static, but changes with temperature will not be good (choose your opamp 
buffer for pitch carefully .. I would recommend something like LT/MXL 
1013/1014)

Seb


Dave Kendall wrote:

>Hi All.
>
>Am building a Midi 2 CV module with a perfboarded Blacet MIDI sync IC in it,
>and am thinking about running several Busses  throughout the modular, to
>minimise on panel jacks, and make set-up faster.
>
>1/ 1V/octave
>2/ Gate
>3/ Trigger
>4/ Clock *1
>5/ Clock *2 (maybe....)
>
>Question is, should I use voltage followers as buffers on these outputs
>where they come out of the MIDI2CV? I figured that this might help stability
>when feeding several VCOs from the 1V/oct outputs via the busses. Is it a
>good thing to do this with the clocks and gates etc........ ? I know Doepfer
>use a buss system, but I haven't got any of their gear, so don't know how
>they do it.
>
>Any thoughts appreciated.
>
>Dave (saving up for Horowitz + Hill - £50 in the UK - Yikes!)
>
>P.S. thanks Ryk, Harry and Seb for stuff on tempcos :-)
>
>
>
>
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