J.H.'s WASP-filter-clone

[Paul Perry]

At 10:43 AM 26/10/98 +0100, you wrote:

>BTW, if you want the filter to self oscillate, just connect a few
>meters of shielded cable to the output ...
>
wow you must have good hearing JH! ;-)

seriously, i have been caught twice lately by outputs oscillating..
an optocupler 3N139 of all things (no bypass on the supply.. osc
at 100Mhz, locked up the 80MHz DSP chip input nicely!

also a AD633 multiplier, hanging an output lead straight off it..
fixed with a 1K series resistor at the output.

paul perry melbourne australia