This circuit for analog video signals was found in the August 1970 issue of Radio Electronics magazine. The circuit is used to drive two video inputs from one signal.
Using a 4046 PLL this circuit recognizes a 1.6 to 1.8 kHz tone by driving an output LED. The...
This battery charger circuit was found in ancient American documentation. The components are...
This circuit is of great use today, when solar energy is becoming increasingly important. The...