Personal Alarm

uydudoktoru

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Yönetici
Yönetici
Alarm.GIF
Parts:
R1____________330K 1/4W Resistor
R2____________100R 1/4W Resistor

C1_____________10nF 63V Polyester or Ceramic Capacitor
C2____________100µF 25V Electrolytic Capacitor

Q1____________BC547 45V 100mA NPN Transistor
Q2____________BC327 45V 800mA PNP Transistor

SW1____________Reed Switch and small magnet (See Notes)

SPKR___________8 Ohm Loudspeaker (See Notes)

B1_____________3V Battery (two A or AA cells wired in series etc.)
 
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