RANGKAIAN PENGUSIR TIKUS NYAMUK DAN KECOA otomatis

"BELAJAR ELEKTRONIKA ASYIK"- Rangkaian pengusir tikus,nyamuk dan kecoa ini bekerja dengan mengeluarkan suara yang telah kita ketahui bisa mengganggu pendengaran mereka, sehingga akan menjauhi jangkauan suara pengusir ini.

Frekuensi yang dihasilkan rata-rata 30-50 KHz, sayangnya banyak juga rangkaian yang tidak benar bekerja mengusir hama (tikus).

Bukan karena tidak berfungsi tetapi karena adanya perbedaan beberapa jenis hama tikus dengan merasakan suara ultrasonik itu sendiri termasuk nyamuk tentunya.

Seperti yang kita ketahui sendiri ada beberapa jenis tikus, sebut saja tikus ruma, tikus got, tikus sawah dan tikus wirok. Ini juga yang menyababkan beberapa pengusir tikus sama sekali tidak berpengaruh terhadap tikus. Pada beberapa hama ditemukan frekuensi 35 KHz supaya bisa mengganggu pendengaran mereka sedangkan pada hama yang lain ditemukan 50KHz, dan jelas tidak efisien jika tidak membuat beberapa rangkaian dengan frekuensi yang berbeda. Adapun rangkaian pengusir tikus dengan VR untuk mengatur frekuensi keluaran, akan sering diatur secara manual oleh kita sendiri sehingga menghasilkan efek yang maksimal.

Setelah mencari beberapa rangkaian pengusir tikus, ane menemukan satu rangkaian yang bisa memecahkan masalah tersebut. Kelebihan rangkaian tersebut adalah secara otomatis dan terus menerus akan merubah frekuensi keluaran dengan rentang antara 30-50 KHz dengan timing yang sudah ditentukan. berikut ini adalah rangkaiannnya :

rangkaian pengusir tikus otomatis antar 30-50 KHz

IC CA3130 disini berfungsi sebagai oscilator gelombang frekuensi berbentuk persegi yang diumpankan ke inpit clock IC CD4047 yang merupakan IC pencacah dekade yang banyak digunakan. Disinilah timing itu dilakukan. VR1 digunakan untuk merubah pulsaclock. sedangkan IC 3 adalah sebagai multivibrator astabil yang beroprasi pada frekuensi hampir 80 KHz yang kemudian keluaranannya diperkuat oleh transistor BD 139 - BD 140 supaya bisamenjangkau area yang luas,,,,

Profile Daniel Sturridge

Profile Daniel Sturridge

 

Daniel Sturridge boosted Liverpool's striking ranks when he arrived at Anfield from Chelsea on the second day of 2013.
The striker was born in Birmingham on September 1, 1989 and began his youth career at his hometown club Aston Villa before moving to Coventry and then Manchester City in 2003.
He faced Liverpool for the first time in 2006 in the FA Youth Cup final. The youngest player in the City side, Sturridge fired four goals en route to the final but the young Reds proved too strong as they ran-out 3-2 winners on aggregate.
Sturridge's impressive form at youth level earned him his first professional contract and at the start of the 2006-07 season, the forward began to train with City's first team.
Despite making his debut as a substitute against Reading in February 2007, the youngster was forced to endure a nine-month absence following an operation to repair muscle damage around his hip which ruled him out for the remainder of the year.
Fully-recovered and determined to make his mark, Sturridge netted his first professional goal in January 2008 and three days later he added another to his tally when he struck on his full debut against Derby.
The 2007-08 season ended in glory for him, albeit at youth level, when he was top-scorer as City won the FA Youth Cup.
The following season saw Sturridge break into the City first team, making 16 appearances and netting four goals while creating three assists. His flourishing performances were acknowledged with the club's Young Player of the Season award.
However, accepting the award was to be one of his final acts as a City player, for in July 2009 his contract expired and the 19-year-old opted for a move to Chelsea.
Following an impressive pre-season, he made his debut for Carlo Ancelotti's title winners-to-be against Sunderland in August 2009 and got his first start for the club against Bolton at Stamford Bridge in the League Cup.
At the end of his first season at Chelsea, Sturridge was the club's highest scorer in the FA Cup with four strikes as the Londoners clinched the double with a 1-0 win over Portsmouth at Wembley.
The 2010-11 campaign saw Sturridge make his Champions League bow against Slovakian outfit MSK Zilina and net four goals in 21 games; however, on the last day of the transfer window in January 2011, it was announced that the forward would be on his way to Bolton as part of a loan deal.
Sturridge shone at the Reebok. He netted on his debut for Owen Coyle's side and was a consistent scorer in the Barclays Premier League, ending his stay there with a total of eight goals in 12 appearances - including one against Arsenal.
Back at Chelsea, new manager Andre Villas-Boas used Sturridge in a wide role, urging him to cut inside and shoot from the right flank.
He was named as a substitute in both the FA Cup and Champions League finals by Villas-Boas' replacement Roberto Di Matteo and finished the 2011-12 season with a tally of 13 goals.
But his time at Chelsea was clearly drawing to a close and Brendan Rodgers swooped to bring Sturridge to Merseyside, concluding a deal at the outset of the 2013 January transfer window.
Perhaps neither man could have anticipated such an instant impact, as Sturridge scored seven minutes into his debut against Mansfield Town in the FA Cup on January 6.
Another strike followed from the substitutes' bench at Old Trafford a week later and by notching at home to Norwich, Sturridge became the first Liverpool player for almost 40 years to score in each of his first three appearances for the club.