I need to create a square wave with a variable frequency. I originally tried to do this with a MC4558 op amp, however I ran into stability problems. Then I picked up a dual 555 timer and can't seem to get near the adjustment range I need.
Specs:
~10V input
Frequency range of between ~0-1200hz, linear response preferred
Needs to be stable, and protected from a signal failure.
Adjustable through the use of a potentiometer (we currently have 0-100k ohm pots)
Any ideas?