Schmitt Trigger 7400 (CB22419E)

This low hysteresis circuit was obtained from old documentation. The circuit must be powered by a voltage of 5 V.

Simple Alarm (CB16496E)
This circuit triggers an oscillator when any of the sensors is opened. The circuit can be powered by...
Electronic Bird (CB18670E)
This circuit imitates the singing of a bird intermittently with the intermittency determined by C1...
Super simple amplifier (CB23699E)
This is a high gain circuit with 3 transistors connected in direct coupling. The circuit is from a...