Publication of Electronic Circuits
Alarm glass of paper of Aluminum (AHF)Here is a warning of aluminum foil, which is activated when the circuit is opened, or rather break the foil, can be useful to protect windows or any area with glass (glass).
The switches S1 and S2, which are connected in series with AHF should be normally closed, they can be placed on the doors. When activated the alarm can disable the opening S1 (normally closed).
47 µF. 16V
Transistor HEP 53
SCR HEP R110
Ringer or buzzer for 6 volts.
paper of Aluminum.
pcb expensive components print