On Jul 1, 2:00=A0am, "1bvs" <b...@[EMAIL PROTECTED]
> wrote:
> badly needed help to generatestep size output(mV range). =A0requirement
is=
to
> generate 10mV step size output ranging from 0-6VDC max.
So, you want to make a staircase ramp?
It's pretty simple: use a low-duty-cycle pulse generator
into an integrator. For low frequency, that'd be a '555
feeding an op amp through a resistor to (-), with a
feedback capacitor to (-), and some provision to reset the
capacitor to zero to start another staircase.
At high frequency, take a square wave generator with
nearer 50% duty cycle... feed through C1 into a rectifier
(two diodes, one to GND, other to ramp-output), a hold
capacitor, C2, and some suitable output buffer amplifier.
|
