Search This Blog

Thursday, 23 April 2015

Insect repellent device using ic 4047

This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. To interfere with the hearing of insects. Make it insufferable, wings to escape in the end.
Operation of this circuit is used IC1 number 4047. A duty to produce frequency. The frequency of IC1, set by VR1 and C1.The output at pin 10 and pin 11 alternately.If the output signal at pin 10 will cause transistors 03 and Q2 work.However, if the output signal to pin 11 will cause transistors Q1 and Q4 to work instead.So the speaker piano sound frequency in PZ1.

Zoro & JMM App Download / Install


Zoro App                                                                                          JMM App










Download this app for Your Android Mobile.
Login / Registration
zoro android app zoro bitcoin investment android app download zoro mobile app zoro app for your mobile how to download zoro android app zoro mobile app download zoro application zoro download li

jmm android app jmm bitcoin investment android app download jmm mobile app jmm app for your mobile how to download jmm android app jmm mobile app download jmm applicationjmm 

download links

https://zoroapp.blogspot.com/
https://zoroapp.blogspot.com/
https://zoroapp.blogspot.com/
https://zoroapp.blogspot.com/
https://zoroapp.blogspot.com/