Found in an old English publication, this circuit applies to the 240 V network, but can be changed to lower voltages. Transistors are mostly general-purpose, admitting modern equivalents.
This circuit converts the relationship between two input voltages into a frequency. The circuit was...
Found in an American brochure from the 90s, this circuit shows how we can implement a 4-input AND...
Intended for amplification of signals in the 1.7 MHz to 1 30 MHz range, this circuit uses a dual...