One set of electronics that this will work and produce a sound that goes sirine around 2 to 3 seconds. If you attach dipintu and the door is opened without the permission of the host, then this tool will give a sign that there is someone who seeks entry. If you install any dipintu car as well. And will depend on your needs.
Components needed:
- Horn used for normal purposes alarm
- Transistor (TR) 1 = 4011
- Transistor (TR) 2 = 4011
- Transistor (TR) 3 = BC107
- Transistor (TR) 4 = BC107
- Dioda (D) 1 = 4148
- Dioda (D) 2 = 4001
- Resistor (R) 1 = 470Kohm
- Resistor (R) 2 = 10Kohm
- Resistor (R) 3 = 2K7ohm
- Resistor (R) 4 = 10Kohm
- Resistor (R) 5 = 2ohm
- Resistor (R) 6 = 5ohm
- Resistor (R) 7 = --
- Condensator (C) 1 = 10uF
- Condensator (C) 2 = 1nF
- Condensator (C) 3 = 47uF
- Condensator (C) 4 = 47uF
- Condensator (C) 5 = = 33uF
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