Jumat, 21 November 2014

Rangkaian Penguat Sinyal Televisi

Rangkaian penguat sinyal televisi

pada gambar rangkian dibawah dapat digunakan untuk menguatkan sinyal RF
dari antena dengan range frekuensi 40 MHz hingga 900 MHz sehingga dapat
digunakan untuk menguatkan sinyal televisi VHF maupun UHF dan menguatkan
 sinyal RF pada penerima FM 88MHz – 108 MHz. Rangkaian penguat sinyal
televisi ini sangat sederhana dan dibuat menggunakan komponen yang mudah
 diperoleh di pasaran. Rangkaian penguat sinyal televisi (TV) ini dibuat
 menggunakan 1 buah transistor yang dioperasikan dengan sumber tegangan
+9 Volt DC. Penguat sinyal TV ini memiliki spesifikasi teknis sebagai

    Respon Frekuensi :  40 – 900 MHz
    Gain:  20 dB
    Tegangan Output Maximum : 90 uV
    Impedancsi Input – Output: 75 ohm

Untuk membuat rangkaian penguat sinyal televisi ini dapat dilihat gambar
 rangkaian dan komponen yang digunakan sebagai berikut.
Gambar Rangkaian Penguat Sinyal Televisi (TV Boster)

Rangkaian Penguat Sinyal GSM (TV Boster),Rangkaian penguat sinyal
televisi,menguatkan sinyal RF,boster TV,boster antena,boster antena
tv,boster VHF,boster UHF,harga boster antena,jual boster antena,jual
boster tv,harga boster tv,menguatkan sinyal televisi,penguat sinyal
tv,penguat sinyal rf,harga penguat sinyal,jual penguat sinyal,buat
penguat sinyal,cara buat penguat sinyal,kit penguat sinyal,penguat
sinyal rakitan
Daftar Komponen Rangkaian Penguat Sinyal Televisi (TV Boster)

    R1 = 120 Ohm
    R2 = 1,5 KOhm
    R3 = 270 Ohm
    R4 = 82 KOhm
    C1,C5 = 100pF (ceramic)
    C2,C3 = 1nF (ceramic)
    C4 = 2,2pF (ceramic)
    D1,D2 = 1N4148
    Transistor = BFR90, BFR91, BFW92
    L1,2 = diameter : 5mm, diameter email 0,5mm, 8 lilit

Untuk merakit rangkaian penguat sinyal televisi (TV) ini dapat
menggunakan desai PCB berikut.
PCB Rangkaian Penguat Sinyal Televisi (TV Boster)

PCB Rangkaian Penguat Sinyal Televisi (TV Boster),harga PCB Rangkaian
Penguat Sinyal Televisi (TV Boster),jual v,buat PCB Rangkaian Penguat
Sinyal Televisi (TV Boster),cara buat PCB Rangkaian Penguat Sinyal
Televisi (TV Boster)

Sabtu, 11 Oktober 2014

Eating During Pregnancy: The Last Two Trimesters

Your concerns about eating during pregnancy will change slightly as your baby grows and develops throughout the next nine months. During the first three months, most expectant mothers must make sweeping lifestyle changes to accommodate the new baby. This may include weaning off a caffeine habit, no longer eating junk food, and switching to whole foods and all-natural foods in lieu of processed food products.
In this article, we will examine the changes in your diet during the last two trimesters. During the last six months of pregnancy, after you have kicked your bad habits and implemented healthy ones in their places, you should focus on eating the right foods to give your baby everything she needs to develop.
Second Trimester Needs and Concerns
Second trimester nutrition is focused upon giving your baby the nutrients she needs to develop her brain, spinal cord, and nervous system properly. This is why it’s so essential to increase the amount of protein you eat during this trimester.

In fact, experts agree that you should aim for a serving of lean protein with every meal, including snacks, during months three to six. In addition, you may begin experiencing cravings during this time.
If your cravings are for unhealthy foods, try to limit your consumption to keep your weight gain on an even keel. If you have cravings for healthy foods, indulge them as you see fit.
If you are concerned that your cravings may be caused by a nutritional deficit, consult with your healthcare professional. She may be able to determine if your cravings are being caused by a lack of certain nutrients in your diet.
The second trimester is also one in which you gain the most amount of weight in the quickest amount of time. By carefully monitoring your diet, you can help keep this gain to a healthy minimum. Most experts agree that a gain of 20-30 pounds throughout the course of your pregnancy is ideal.

More info : Trying to get pregnant quick

Kamis, 09 Oktober 2014

Woodworkers Best Tool Table Saw

As oven is to a baker,so is the table saw to a wood worker.There can be no wood working operation unless there is an efficient and good sawing machine in the workshop.Wood cutting operation has been going on since time immemorial.Earlier it was done by using axes and other hand held saws.But with the changing times,technology also altered and innovative ideas set ground for the modern day table sawing machines.
Earlier the whole operation was done manually and proved to be quite a tedious task.But the invention of electricity and the subsequent technological advancements lead to the introduction of the motor run saws.These tools use electricity to operate.This has also lent a push to the production lines too.More is achieved in comparatively lesser time.
There are mainly three types of saws which are in wide use.The bench top table saw is the most basic kind of an instrument placed on the table.These kinds of saws are light weight and are designed to be carried by a single individual for work.The bench top saws are the least expensive of the trio and are also the smallest in size.
The contractor table saw is slightly heavier and bulkier than the hand held one.It is the common choice of contractors who have a sawing table at the construction site.It is also preferred by the more space conscious workers and definitely has a lot less energy consumption.
Cabinet table saws are the heaviest among all types of ripping instruments.They have a cabinet shaped base and are run on electricity.These kinds of saws are the most efficient and in much demand.
There is another kind of table saw which is a fine mix of all the above featured saws and that is why it is called the hybrid table saw.It is a mainly a mix of the contractor and the cabinet table saws.This kind of saw provides a large working surface,has a powerful base and is accurate.
There are multiple brands in the market which manufacture and promote the sawing instruments.Some of the well established brands are Hitachi,Bosch,Makita and Ryobi which have a complete range of table saws and the various accessories needed for wood work and carpentry.
Even though wood work has become highly mechanized and the sawing equipments have their own safety measure,yet it is advisable to follow some safety rules while working on the saw.Any accident on the work place can prove fatal if proper care and precaution is not taken. Some of the basic rules which need to be followed while working with the wood can be enumerated as follows:
Compulsory use of safety glasses or a face shield while working.
Use a sharp blade while working with wood as it will lessen the friction.
Ensure safety guards are in proper place.
Do not push the wood with hands in the same line as of the blade.
Stand to one side in case of kickback.
Keep the area around the saw uncluttered.
Unplug the device when not in use.
If all the above things are taken into consideration and all the rules followed strictly,wood working can become a delightful and hassle free activity with positive results.
For more information on Table Saw and Portable table Saws please visit our website.