Musical doorbell circuit with two trigger modes


Posted on Mar 28, 2007

L a few custom IC 66} began to slow music. When the song ends, no electricity flows through the thyristor, the thyristor then cut straight in the light once again shines on the phototransistor Bu [I a mountain. Roundworm parallel Tiao Ping] I XsJ, people hang block


Musical doorbell circuit with two trigger modes
Click here to download the full size of the above Circuit.

touchpad, just "to have every touch, its population will be out of a trigger pulse thyristor rectifier car, J fork issue is music, therefore, the same circuit can be light or tip sheet l touch to make it work. button to open the circuit can cry Sl 1 normal state, the push-button F, the doorbell made mountain music.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Narrow band FM demodulator
Linear Amp Project HF VHF UHF Amplifier
fun electronic circuits
1058 to 1074 mhz vfo oscillator circuit
fahrenheit thermometer circuit
Egg Timer
LED VoltMeter Circuit
Interface Bluetooth with LPC2148 circuit
20 MHz VHF CRYSTAL OSCILLATOR
Active Plug Classic
Transistor circuit of a pressure gauge



Top