This circuit is intended to increase the width of a pulse. The circuit is TTL and can be used as a shield. We found it in an 80's Electronic Engineering.
We found this configuration of band rejector filter or band rejector with operational 741 in a...
This oscillator can use any CMOS inverter. The circuit is crystal controlled and was found in the...
This circuit was found in a 1967 US documentation. It shows how to build a gain control by digital...