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Tekky Wailing Siren Kit

KI0236
KI0236 - Wailing Siren Kit group

$11.95

QTY Price
1 $11.95
6 $10.90
25 $9.90
50 $7.20

Description

In this Wailing Siren Kit, there are two oscillators: a simple two transistor "multivibrator" to flash the LEDs. Also a low-cost 555 Timer IC to produce the siren output to drive the speaker. The output of the multivibrator used to flash the LEDs is also used to vary the frequency of the 555 oscillator frequency. The 555 IC Output then drives the speaker. This is how we create the two tones that the 555 IC produces. As the two-transistor multivibrator goes from a red to green LED the DC voltage on the input to the 555 changes. This produces a wailing sound.

Included

470R 0.25W 1% Resistor (Yellow, Purple, Black, Black)

100K 0.25W 1% Resistor (Brown, Black, Black, Orange)

10K 0.25W 1% Resistor (Brown, Black, Black, Red)

150R 0.25W 1% Resistor (Brown, Green, Black, Black)

.01uF, (10nF) 100V Poly/Green Cap

22uF 100V RB Electro Capacitor

1000uF 16V RB Electro Capacitor

555 Timer IC

1N4004 1A Silicon Diode

TO-92 BC337 NPN Transistor

57mm 8 ohm 0.5W Speaker

9V Battery Snap

10cm Speaker Wire

Resources

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Products may differ from pictured.
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