Re: ramp time to voltage


h...@xxxxxxxxx wrote:
> I have a bunch of x y flatbed recorders and I want a simple rising
> volatge to simulate passing time on the x axes. I can work from a
> diagram and know some basics. HP made this in a small package.... HP
> 17108A.... anybody have one?
> I can take MV or volts 1-10.

You could keep it simple by using an LM334 constant current IC (3 pin
device) by National and discharge it into a capacitor. You can tweak
the current on the LM334 with a pot, and make a nice linear ramp. This
is a 3 part solution, not including any power supply.

Rocky

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