This differentiator for the positive front of the input signal can be elaborated based on any operational amplifier. The characteristics will depend on the components.
Found in a 1967 Ferranti documentation, this circuit uses a LDR from that time as a sensor....
This oscillator works with voltages from 1 V of alternative energy sources, such as a battery of...
This configuration, well known to those who study digital electronics, was obtained in a 1974...