On Sun, 10 Aug 2003 15:16:03 -0000, you wrote:
If you need a linear frequency response from an RC network look up op-
amp integrators.
Cheers Bernard, after reading what one was I realise I am already
nearly using one <G>. I will try adding a cap across the -ve to output
on the op amp and see what happens. I've a feeling that it may still
be necessary to increase my 12V to 14 and use the range 2-12V but
that's one for tommorrow. I can easily accomodate that with the
low/high trimmers on my interface and those on the speed controller.
--
Steve Blackmore