Free MP3 download : ROCKING MUSIC DANGDUT
Please download music dangdut following :
1. Evie_Tamala_-_Selamat_Malam.mp3
2. Rhoma_Irama_-_The_Legend_-_Begadang
Listen ... then let's get together the whole body swayed and danced with joy
Sunday, May 8, 2011
Thursday, May 5, 2011
SIMPLE ELECTRONIC DEVICES : Circuit Insect Repellent
Circuit Insect Repellent
Mosquitoes are very annoying. It will not be able to sleep in our homes if there are many mosquitoes naughty. In the world of electronic mosquito repellent device created quite sophisticated. The way it works to produce high-frequency sound vibrations, which had not captured the human ear. The series is based on the theory that insects such as mosquitoes can be rejected by using sound frequencies in the ultrasonic (above 20kHz) range. The series is only 4047 CMOS IC PLL, cable as working in 22KHz oscillator. A complementary symmetry amplifier consisting of four transistors are used to strengthen the voice. Speaker PIEZO buzzer to convert the output of the amplifier for ultrasonic sound that can be heard by insects.
The series could use a 12V DC voltage
Place the electronic circuit in a dim, dimly lit or completely dark. The results can not you hear with your ears because
Mosquitoes are very annoying. It will not be able to sleep in our homes if there are many mosquitoes naughty. In the world of electronic mosquito repellent device created quite sophisticated. The way it works to produce high-frequency sound vibrations, which had not captured the human ear. The series is based on the theory that insects such as mosquitoes can be rejected by using sound frequencies in the ultrasonic (above 20kHz) range. The series is only 4047 CMOS IC PLL, cable as working in 22KHz oscillator. A complementary symmetry amplifier consisting of four transistors are used to strengthen the voice. Speaker PIEZO buzzer to convert the output of the amplifier for ultrasonic sound that can be heard by insects.
Mosquito repellent circuit scheme
The series could use a 12V DC voltage
Place the electronic circuit in a dim, dimly lit or completely dark. The results can not you hear with your ears because
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