Boat alarm (CB8966E)

Found in a 1980s documentation, this circuit works with a 12V relay. The horn is the boat's own.

| Clique na imagem para ampliar |

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...