3 Tone Siren


This project is a 3 tone siren based on UM3561 IC.

Description


3 Tone Siren project produces Gun Sound, Police Siren and Ambulance Siren effects from a speaker.  This project is built around UM3561 IC driving an LM386 audio amplifier to give that extra punch.

Specifications:

Supply input 6 VDC @ 200 mA
Output : Speaker, 8 Ω / 0.5 W
Two slide switches select and play different tones
On/Off Side switch for supply input
Terminal pins for supply input and speaker output
Power-On LED indicator
Four mounting holes of 3.2 mm each
PCB dimensions 42 mm x 64 mm

Schematic


download schematic in PDF

 

Parts List


PCB Design


PCB bottom layer

 

 

 

 


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