3 Tone Siren
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 […]