Alarm 2 transistors of components that in needed the Resistor: - R1 = 22 of K Ohm
R2 = 2200 Ohm
R3 = 47 K Ohm
2) Transisitor: T1 = BC 109
T2 = 2 of SB 178
3) Kondensator: C1= Elco 200 MFD/16 of Volt
C2 = 5o nF 4) Other: Loundspeaker 8 Ohm
the Battery 9 Volt
If we have assembled this series, then checked once more continuation between component-componen.
If being perfect, then his input of the resources battery.
Afterwards after that pressed his switch switch that was available, afterwards lapaskan.
Then freely the switch from the pressure, will be able to be heard the sound alarm like alarm police or the fire extinguisher.
Congratulations tried
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