The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
This CMOS circuit divides the frequency of a rectangular signal up to 2 MHz by 6. The supply...
Originally this circuit is from an English magazine, but I found it in Argentina's Radio Chassis...
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...