3 Tone Musical Bell with Audio Amplifier

  3 Tone Musical Bell project is built around BT66T (UM66) IC driving LM386 audio amplifier to give that extra punch.   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

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