CIRCUITRY KEYBOARD
ELECTRONIC CIRCUIT EXPERIMENT KIT
WIRING SEQUENCE AND CONNECTIONS
CIRCUITS
In
Insert the metal end of the wire into the spring connector next to the
number shown on the board.
Circuit 1
, below, the connection sequence is;
4-12
Battery positive pole (+) to LED (+)
11-23
LED negative to Main Switch
24-3
Main Switch to Battery negative (-)
When completed, the circuit connections will look like the image on the
right.
Always turn off the Main Switch before connecting or
disconnecting wires.
11
23
24
3
4
12
Building a simple LED circuit
4-12 • 11-23 • 24-3
01
Introducing the Reed Switch
4-10 • 9-26 • 25-3
02
Introducing Resistance and Current
03
When the switch is moved to “On” the Gr
You can move the wires to another LED and repeat the experiment.
Just make sure that you connect to the positive and negative poles
in the right order or the LED will not work.
The Main Switch is not in the circuit, so if you turn it on nothing
will happen. Instead, move the Magnetic Rod near the Reed
Switch and it will close, turning on the LED. Make sure that the
arrow on the magnetic rod is pointing down.
Main Switch.
Now, press the Push Switch. The Blue LED will come back on, but
brighter.
The Main Switch’s path has greater resistance (1kΩ or 1,000
ohms) than the other path with only a 100Ω resistor. This means
more power can get to the LED through the Push Switch, making
it glow brighter.
4-21-23 • 24-15 • 22-13 • 14-16-8 • 7-3
9
3
4
25
26
10
8
7
3
4
21
22
23
24
15
16
13
14
