24
Clever alarm
system
YOU WILL NEED
+ your alarm system from
Experiment 5
HERE'S HOW
Insert the long wire into the alarm
circuit again. What do you notice?
What do you notice?
A
C1
R1
10 µF
R6
470 Ω
220 kΩ
LED2
A
A
C
LED1
C
R2
R4
470 Ω
Pb1
22 kΩ
R3
T1
100 kΩ
B
EXPERIMENT 6
+
–
R5
3.3 kΩ
T2
