Delayed Alarm (CB6418E)

This alarm circuit has a trigger delay system. The circuit was found in a Popular Electronics of the 90s. The components are common.

| Clique na imagem para ampliar |

Laser Listening Receiver (CB25069E)
This circuit receives the modulated signals reflected by a laser on a window pane enabling...
Low Pass Filter (CB21764E)
This circuit allows frequencies between 1.8 and 30 MHz to pass. Data for the coils is provided next to...
Liquid level control (CB20724E)
Found in old documentation, this circuit has only the most difficult component to obtain the PUT....