Fast adder 1 (CB7055E)

We found this circuit in an Electronic Engineering from the 90s. It applies to any logical family.

DC Motor Digital Inverter (CB18010E)
This circuit, which can also be adapted to function as a microcontroller shield, is from 2003...
Ion detector (CB21003E)
This sensitive circuit was found in an Electronics Hobbyists Handbook from the 1990s. The circuit can...
Antenna Amplifier (CB25885E)
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...