Based on the TCA6600 or TCA5500 this circuit was found in a 90’s European documentation. The integrated circuit used is not very common today.
This circuit was found in a British documentation from 1969. It can be implemented with modern...
A simple VCO using two inverters in a ring configuration is shown here. A VCO is a circuit in...
The four gates of a 40111 IC are used in thes two-out circuit. The output chages their state in a...