The components List
Resistors ½ W + 5% (Unless specified.)
R1—————————–15K
R2—————————–10K
R3—————————–100K
R4—————————–4.7ohm 1W
Capacitors
C1—————————–47uF 16V Electrolytic
C2—————————–0.0068uF 50V polyester
C3—————————–100uF 16V Electrolytic
Semiconductor devices.
IC1, IC2———————-IC-555 timer IC
Q1—————————-BD140 50V 1A PNP Transistor
Other devices.
SP1——-Speaker 8 ohms 0.25W size 2 inch
S1——–Rocker switch. NO/OFF (3pin)
B1——– Battery 9 volts with terminal
Socket IC 8 pin
PCB, Wire, etc.