The 555 timer's output works just fine on any frequencies I choose. My problem is keeping the output current (Pin 3) on a constant level. For example, 5V at 4mA of current is the default voltage and current of the 555 timers output. If I increase the voltage (6v, 7v, 8v etc..) or lower the the voltage (4v, 3v, 2v etc.) I'd still prefer to have 4mA of current in the output of the 555 timer despite the voltage changes.
Would anyone recommend me some type of IC that can accomplish this, if there is any?
Would anyone recommend me some type of IC that can accomplish this, if there is any?