We found this circuit in Ferranti's 1974 transistor manual. The components are from the period. The table gives the value of C1 for different frequency ranges.
It is like to the previous circuit with a lock that keeps the LED on at the end of the timer. The...
The presented circuit generates a signal in the form of a ladder that can be useful for surveying the...
This 2005 Linear Technology circuit has separate outputs for monitoring the charge and discharge...