Elehob

In modern times, mobile devices have become very popular, because of the ease of use even outside the room though. Its simplicity to carry anywhere, of course, making mobile devices requires a source of electricity from the battery. The use of a battery is indeed the best solution, but the battery has limitations in providing electricity. For this reason, we need another device that can charge the battery anywhere and anytime. For this reason, a power bank was created to charge mobile devices everywhere. Basically the power bank is an electronic device consisting of a lithium-ion battery and a DC to DC boost converter circuit, which is able to change the voltage of 3.7 volts from the battery to 5 volts DC. DC to DC boost converter system Works with the high frequency switching method so that it is quite efficient in consuming battery power. The DC to DC boost converter consists of main components such as ferrite core inductors, mosfets, ultrafast diodes and filter capacitors. Electri...

DC boost converter technology or DC to DC step up converter, is one of the most widely used systems in modern electronic devices. DC boost converter allows the power supply unit to be made as simple as possible, because the power supply unit has only one output channel. In this way, electronic devices can be made more concise. Examples of the use of the easiest to find include, the use of a DC boost converter circuit on LED televisions and LED monitors. Modern LED tv mainboards are very compact, because they only use a power supply circuit with one output channel. To provide sufficient power to the LED backlight unit, a DC boost converter system is used which is able to change the 12 volt DC voltage from the power supply unit to 32 volts or more. Meanwhile, to meet the needs of the main processor power used a DC buck converter circuit which is able to reduce the 12 volt DC voltage to 5 volts DC efficiently. One of the main reasons for using a DC boost converter is that it has very go...

Mungkin banyak dari kita yang yang belum tahu apa itu Gallium Nitride. Gallium nitride adalah material semikonduktor bandgap langsung biner III / V yang cocok untuk aplikasi transistor daya tinggi yang mampu beroperasi pada rentang suhu yang  jauh lebih tinggi dari transistor silikon biasa.  Sejak era 1990-an, Gallium nitride telah digunakan secara khusus dalam dioda pemancar cahaya atau (LED). Gallium nitride mengeluarkan cahaya berwarna biru yang digunakan untuk membaca disk dalam Blu-ray. Selain itu, gallium nitride juga digunakan dalam perangkat daya semikonduktor, seperti komponen RF, laser, dan fotonik. Silicone wafer Pada tahun 2006, transistor GaN peningkatan-mode, lebih dikenal sebagai FET GaN, transistor ini mulai diproduksi dengan menumbuhkan lapisan tipis GaN pada lapisan AIN dari sebuah wafer silikon standar menggunakan deposisi uap kimia logam organik (MOCVD). Lapisan A.I.N ini bertindak sebagai penyangga antara media dan GaN. Pros...

At present the world of aviation has been very advanced, this is evidenced by the rapid intercontinental flights, and accompanied by increasingly cheaper costs. All of this can be realized with the use of super materials, in the constituent components of an aircraft. To reduce flight costs, one way that can be applied is by reducing the weight of aircraft. In this way the aircraft fuel consumption becomes more efficient, so the cost of flights will be cheaper. To reduce the weight of an aircraft, for now using lightweight and strong carbon fiber and aluminum alloy materials. This material is very strong and has a light weight, so it can be used to make aircraft parts. In addition to the development of the fuselage, the scientists also developed another important part of the engine. As we all know airplane can take off, and fly because it gets thrust from a jet engine. Jet engines are one of the strongest engines on earth besides Rocket engines. The jet engine is ab...

Have you ever wondered, what is the furthest thing that man has made? Perhaps many think, that man-made furry thing is mars lander. Or maybe a satellite to research jupiter. However, in fact the man-made furry thing is a pilotless aircraft with ancient technology. The plane was a voyager 1 launched on September 5, 1977. The main mission of the voyager 1 was to investigate the planet of jupiter and saturnus, but improved again to examine the heliopause and interstellar space. On March 5, 1979, voyager 1 reached the planet of jupiter, and on November 12, 1980 the voyager 1 reached the planet of saturnus. The voyager 1 power is 420 watts, sourced from thermoelectric generator radioisotopes. To communicate with the earth, voyager 1 uses a power transmitter of only about 22 watts, and it takes about 36 hours to communicate with the station on earth. In 2015 the voyager 1 distance from the earth is about 19.7 billion kilometers, and to date the voyager 1 continues to go and awa...

Have you seen stars in the sky? What do you think of when looking at a star? Perhaps all you can think of is, the stars in the sky are very far away and there is no way we can go there. But, in fact the stars in the sky are not only far away. Stars in the sky are thousands of years, even millions of light years. That means, the starlight in the sky comes from thousands of years ago. So the light we see is light that comes from the past. For hundreds of years, astronomers have been researching stars in the sky using telescopes. In general, telescopes used are optical telescopes, which have very limited capabilities. Along with the development of the era, telescopes continue to improve technology until its ability continues to increase. The development of telescopes is not just telescopes on the surface of the earth, but until the telescope in space. In the eighties, scientists made the hubble hubble space hubble telescope, to be placed in orbit around the earth. Placem...