Jacob's Ladder (CB21079E)

This circuit was found in American documentation from the 90's. The transformer is of the high voltage type for old light advertisements.

| Clique na imagem para ampliar |

Alarm (CB6115E)
This circuit is from an old documentation. However, it can be mounted with modern equivalent...
Operational with Hysteresis LM309 (CB15103E)
In the figure we have the way to add hysteresis to an operational amplifier. The relationship...
Action Video Game (CB24648E)
This video game is another of the AY3 series with the AY3-3606 integrated circuit. The circuit was found...