3 Tone Musical Bell

This project is a 3 tone musical bell.

Description

Tone Musical Bell is a project built around BT66T (UM66) IC driving, LM386 has been used as audio amplifier to give extra punch.

Specifications:

• Input 6 VDC @ 200 mA
• Output 8 Ohms 0.5 W Speaker
• Terminal pins for supply voltage and speaker connection
• Power-On LED indicator
• Onboard push to ON switch
• Four mounting holes of 3.2 mm each
• PCB dimensions 35 mm x 54 mm

CN1 – DC Supply Input
LS1 – Speaker Output
SW1 – Tactile Switch (Push to ON)
D1 – Power-ON LED Indicator

Schematic

Parts List

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