Wailing Siren Kit (#1751)
This is the Wailing Siren Kit. This kit will produce a Wailing Siren sound that can be used on tricycles, bicycles, and battery-powered toy cars. It can also be used in models and other games where a Wailing Siren sound is desired. The circuit is based on an LM555 Timer and a CMOS Quad Schmitt Trigger.
This circuit can be built in one night. A small speaker is included in this kit. The PCB is double-sided, plated thru-hole, 1.50" long x 2.50" wide made of .062" FR-4 epoxy glass. It has green Solder Mask (LPI) on both sides with white Silk Screen on the Top side and four mounting holes.
This kit is now available as a "Built & Tested" for a small fee for those that do not want to build it themselves. Below is a detailed introduction to component identification and kit assembly.
General Instructions
This kit does not include the tools you will need to assemble the circuit. You will need tools such as a soldering iron, solder, wire cutters, etc. The kit includes the following:
Type
Part Description
Quantity
IC
LM555N, Precision Timer, DIP, 8-pin
1 ea
IC
CD4093, Quad 2-Input NAND Schmitt Trigger, DIP, 14-pin
1 ea
Transistor
2N4401, NPN, Signal, TO-92
2 ea
Transistor
2N4403, PNP, Signal, TO-92
1 ea
Diode
1N4148, Silicon, Signal, DO-35
2 ea
Diode
1N4007, Amp, 1000V, DO-41
2 ea
PCB
Wailing Siren PCB, NightFire
1 ea
Schematics
Wailing Siren Circuit
1 ea
Instructions
Basic Soldering & Components ID
1 ea
Resistor
120 Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
470 Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
3.3K Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
10K Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
33K Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
82K Ohms, 1/4 Watt, Carbon Film
2 ea
Resistor
330K Ohms, 1/4 Watt, Carbon Film
1 ea
Resistor
3.3M Ohms, 1/4 Watt, Carbon Film
1 ea
Capacitor
.01uF, Ceramic Disc
2 ea
Capacitor
.1uF, Ceramic Disc
2 ea
Capacitor
10uF, Aluminum, Radial
1 ea
Capacitor
100uF, 1 Aluminum, Radial
3 ea
Potentiometer
100K, Single-Turn, PCB Mount
1 ea
Battery Clip
9V, Snap-type, 2 wires
1 ea
Speaker
2", Round, Miniature
1 ea