Why is this please???? Was: RE: [sdiy] MFB SEQ-02 question

[Neil Johnson]

Hi,

Oren Leavitt wrote:
> As a more permanent solution, you (and MFB) may want to employ an  
> output buffer design with that small resistor within the feedback  
> loop of the buffer. That will isolate capacitive loading without  
> the resistor introducing error when the CV output is loaded.

Here are a couple of examples:

http://www.milton.arachsys.com/nj71/pdf/cesyg/vcf-sch.pdf
http://www.milton.arachsys.com/nj71/pdf/cesyg/vclfo-sch.pdf

In both cases the output buffers have a 100R resistor on the op-amp  
outputs to deal with capacitive loads (long shielded cables, for  
example).

Cheers,
Neil
--
http://www.njohnson.co.uk