Bird Sound Door Bell - Friends may be bored listening to the sound only monoton bell at home, if you make a doorbell iongin with other sound you can try to make a sound with the series of birds. This series is quite simple and PCB is available at many electronics stores.
Components needed:
- Resistor (R) 1 = 100Kohm
- Resistor (R) 2 = 5K6
- Resistor (R) 3 = 5ohm
- VR = 10K
- Capasitor (C) 1 = 47nF
- Capasitor (C) 2 = 20nF
- Capasitor (C) 3 = 100uF
- Capasitor (C) 4 = 0nF
- Capasitor (C) 5 = 10uF
- Capasitor (C) 6 = 1uF
- Transistor (TR) 1 = BC109
- Transistor (TR) 2 = AC128
- Speaker (LS) = 8ohm
Happy trying!!!
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