[sdiy] Voltage amplification via op amps

[Peter Grenader]

Kids,

anyone have a quick and dirty circuit for (almost) doubling a voltage
control input which also allows for some sort of trim pot adjustment?  I
assume an op amp with 2 to 1, but I was hoping someone has worked this out
already so I could...ah...'borrow' it?

Let me be a little clearer:

I've got a VC input, works great. Now I want to amplify it's range, but will
need an adjustment (trim pot) to assure the adjusted range is exactly what I
need (you see, 'doubled' above was a bit of a generalization).

I can't change the range on the input voltage, that needs to stay where it
is - I need to increase it after it arrives into the circuit it's
controlling.  I also undersatand that I'm dealing with the limitation of the
supply voltages to the op amp itself, but I think the max level of the input
vc will allow me this headroom without problems.

i hope.