Paul

Do we have any 555 experts on here?
I am feeding the control voltage into pin 5
and the duty cycle seems to be limited to 0% to 50%.
Over 50% and the pulse width jumps to max.
-- 
Paul Lamar ...No rotor no motor.

  Paul

Check your input signal carefully to ensure it is not going more negative
than gnd. This can forward bias the substrate junctions. Also input pulse
width at the upper threshold level must be shorter than the output pulse.

regards, Robert


Thanks Robert. I did that. Did not help. I have some TI TLC555IP CMOS 555 on order
from Digikey. In my experience CMOS are less prone to glitches.