Ding Dong Bell - Solder (without PCB And Battery)
Introduction
This is an ingenious little device that is an ideal introduction to electronics. It is fun to build and more fun to play with!
Now you can built your own Door Bell to welcome your guest.
This kit include all the components as below :
Resistors
R1 68 kΩ (1/4 watt)
R2 68 kΩ “
R3 68 kΩ “
R4 10 kΩ “
R5 15 Ω “
Capacitor
C1 0.01uF ceramic
C2 10uF 16V electrolytic
C3 47uF 16V electrolytic
Semiconductors
D1 Diode 1N4148
D2 Diode 1N4148
U1 Integrated Circuit NE555 (Timer)
Miscellaneous
Loudspeaker 8 Ω
Battery snap for 9V battery
Push button switch (normally ‘off’, momentary contact press ‘on’)
8 pin IC socket (for soldering board)
And lastly is the
Circuit Diagram
