[sdiy] 2SK170 FET alternative

[Ian Fritz]

Seb --

>...  I did read 3 different LM311 datasheets and nowhere did it say that 
>pins 5 & 6 needed shorting together if not used (or maybe it did say this, 
>but I missed it .. it was late at night).

Did you try the National data sheet?  It is #1 in the Application Hints 
section.

Also be sure to read National AN41 (Widlar) which explains the undocumented 
schematics in the data sheet.

   Ian