[sdiy] Ofsetting LFO output

[Roy J. Tellason]

On Wednesday 01 June 2005 07:04 am, Mikael Mørup wrote:
> Hi list
>
> I have an LFO that puts out a -5V to +5V peak to peak
> squarewave. For clocking another module i need a 0V to 10V
> squarewave. is it possible to make a small circuit that
> would "ofset" or whatever it's called, the LFO output ?

Yep.  Use an op amp.

> My modules are running on +-12V.
>
> In my simple mind i am thinking something like an Opamp with
> and ofset, but i don't know excatly how to design such a
> thing.
>
> Any suggestions?

If you take your standard unity-gain inverting amplifier (or non-inverting if 
that's going to be an issue) and just feed some dc into one of the inputs 
through a series resistor tied to the wiper of a trimpot to get it where you 
want it.

> A little schematic would be very nice :-)

I'm not feeling ambitious enough to try an ascii schematic at the moment. :-)