[sdiy] Favourite VCO designs

[David G. Dixon]

> ... I design circuits in blocks.

This is one of the things I find very appealing about analog design.  It
reminds me of the "unit operations" concept in chemical engineering (my
professional training), whereby even the largest and most complex chemical
plant can be broken down into a collection of discrete processing units,
each of which is (more or less) easily understood and designed.  Without
this capability, we wouldn't have many of the things we take for granted in
the modern world (like plastic).  In a sense, electronics is even easier,
since there is only ever one thing being pumped around the circuit.

This is why my advice to a noobie looking to get into electronics would be
to curl up with a decent book on opamp circuits (Coughlin and Driscoll is
one of my favorites, but there are many good ones).  Opamps, in particular,
lend themselves to this "processing block" approach.