I need a device .....

[Slava]

Hi All !
I need a device that produce the signal like:
*****              *****            *****             *****
*****
*     *             *     *            *     *            *     *
*     *
*     *             *     *            *     *            *     *
*     *
*     *             *     *            *     *            *     *
*     *
*     *             *     *            *     *            *     *
*     *
*      *********       *********       *********      **********       ****
Amplitude is no matter.
But   high/period ratio must be depended from master ( or manage) voltage.
It must be integral unit.
Thanks for any help!

I will make the unit for idle valve management.

Slava.