Hi, Martin

No, it's not the same ...so why High and Low commands ??

Capacitve load ...mmmmh, I don't know exactly at how many nF it begins ...may be, it's better not to ask for more than the 20 or 25 mA given by the data books !!!

I Only now driving directly 1 µF and more do not work with = ...
There are some trails to do ... to find the real limit !

Ah ! the article from Elec.Prat. was signed by Marc LAURY ...may be you could contact him via the book editor ...

Another solution could be to use the sine conformer section of an ICL 8038 ...

Alain