This filter was found in an old publication from 1977. The circuit must use a simple two-voltage source and the components can be changed for operation at other frequencies.
We show in the figure how to implement a current monitor circuit using only an operational...
This filter is from a 1977 manual. The integrated circuit is 741. The frequency is given by f = 1...
You can program the 4018 in other ways, as shown in the figure. In this 7 divider configuration, for...