View GGL Induksi from PHYSICS () at Tenth of November Institute of Technology. GGL Induksi Diri Nama Anggota: Hana Iftitah H. (14). /03 – 09/03 Induksi elektromagnetik Hukum Faraday-Lenz, Induktansi diri dan mutual Memahami hukum Faraday dan hukum Lenz serta mampu. INDUKTANSI DIRI. OLEH: Riza Riano: Uzi Fauziah: Temperatur. Tekanan. JURUSAN PENDIDIKAN FISIKA. FAKULTAS PENDIDIKAN.
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Did you know that vacuum tubes are still produced and most probably you eiri one in your home? Click or tap to find out ineuktansi devices in your home still use vacuum tubes!
If you check your pockets, you will probably find a dozen RFID devices. I have just checked my pockets. If to add two RFID-chipped cats sitting on my laps, then the number will be First, there were Michael Faraday experiments with coils. He used them to investigate how changing distance affected induction and created the first transformer.
Ambassador to the Soviet Union, which some consider a predecessor of radio-frequency identification RFID because it was a passive transmitting indumtansi energized and activated by electromagnetic energy coming from an external transmitter located nearby. The resonator with a membrane acted as a condenser microphone and transmitted an amplitude-modulated signal that was received by a radio receiver.
Modern RFID devices do exactly the same. The coils of the RFID tag and the receiver together create a transformer without a core that provides inductive coupling to energize the tag and to transmit information between the devices. Because passive RFID tags do not contain a battery, they can last a lifetime. Both are closely related communication technologies used for a large number of applications, for example, inventory management, contactless payment, sharing contacts, photos and videos, and electronic toll collection.
RFID Radio Frequency Identification is a technology that uses electromagnetic fields to identify and track tags attached to various objects. NFC Near Field Communication is the technology based on existing RFID standards that enables communication indujtansi two closely spaced less than 10 cm or 4 inches electronic devices, usually between two smartphones, a smartphone, and reader or a smartphone and a tag.
Radio Frequency Identification RFID enables one-way or two-way communication between RFID tags that can be unpowered passivebattery-powered active or battery-assisted tags and a powered RFID reader, which can be passive they can only read information from tags or active they can transmit signals to tags and receive signals from them.
RFID tags can be scanned at large distances, up to meters, without a direct line of sight between the tag and the reader and therefore they can be used, for example, for airport baggage handling. RFID uses several radio frequency bands, shown in the table below. Communication between the reader and the tag is done using several standardized protocols depending on the frequency band. NFC enables two electronic devices, one of which is often a smartphone and another is a smartphone, a credit card reader or an NFC tag, to establish two-way communication by bringing the two devices together within less than 5 centimeters 2 inches of each other.
NFC combines the interface of a smart card and a smart card reader into a single device. Unlike RFID, which works well at distances of several hundred feet at higher frequencies, NFC operates on a maximum range of only 4 inches or 10 centimeters. Examples of communications between two mobile phones include file sharing via Android Beam mobile application, pairing and establishing a Bluetooth connection just with one tap without the necessity to enter passwords.
There are many examples of communication between a mobile phone and a token that can be easily programmed from the phone: One of the main uses of NFC is probably payment using the connection between a mobile phone and a payment terminal. Telephone with NFC capability can lock and unlock doors. Note that at this time summer Apple devices can support only payment and nothing else. There are three kinds of RFID tags: Active and semi-passive tags use batteries to power their circuits.
They are more expensive and provide more features. Active tags use their batteries to emit electromagnetic waves, which increase the communication distance. Because active tags have batteries, they can store much more information and can provide a much larger range of communication. They can broadcast a signal that can be received up to meters away. Because of this capability, active RFID tags are a good choice for asset tracking. Batteries of active RFID tags can last up to 10 years. They are usually not replaceable and if a battery fails the active tag will need to be replaced.
Active RFID tags can work in two modes: To conserve battery power, a transponder tag listens for the signal from the reader and turn on its transmitter only if there is such a signal. Beacon tags, on the other hand, turn on their transmitter, say ones in 10 seconds to send its specific information. Active tags often contain various sensors to provide information about moisture level, temperature, pressure and other parameters of the environment.
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Active RFID tags often have a complex design and are more expensive than passive tags. Unlike active RFID tags, passive tags are very simple indhktansi have only two components: Once the tag is within the read zone, both coils together create a transformer that provides inductive coupling, which is used for communication and to provide power to the tag itself — exactly like during wireless smartphone charging.
There are two types of passive RF tags: RFID stickers and hard tags. Thanks to adhesive backing, stickers can be put anywhere, for example on library books siri track library inventory.
Hard tags are durable and can be made of glass, plastic, metal, ceramic, rubber and other materials. Unlike active tags, passive RFID tags are much cheaper smaller, thinner and can last a lifetime because they do not contain a battery. Passive tags enclosed in a glass capsule, which has the size of a grain of rice can be found in any pet dog or cat.
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They operate similarly to passive tags, using the reader signal to cause a response from the tag. The battery of semi-passive tags is used to power electronics that is used for reading information from various sensors even if the tag is not interrogated by the reader. When the tag sends its information to the reader, it provides the sensor reading along with the tag serial number.
A human microchip implant is usually a passive RFID transponder containing an integrated circuit and an antenna coil in a glass capsule. They are implanted subdermally into a hand or other part of human body and contain a unique ID number that can be linked to information in the database containing information for personal identification, law enforcement, medical history, and medications, etc.
There are many potential problems with RFID implants including cancer at the inruktansi site, migration of the implanted transponder, incompatibility with magnetic resonance imaging devices, security risks, and privacy issues. It seems that in the future, a mobile phone with NFC will be used instead of xiri wallet with several credit and loyalty cards. So, what is NFC?
It is a short-range up to 10 cm high frequency The connection is usually made within less than a second and, for example, a small kB picture will be transmitted during 1—5 seconds.
The biggest strength of NFC is in that it can be used in conjunction with Bluetooth. Using these three modes of operation, NFC allows users to share content between two smartphones, induktanso bills by tapping their smartphone on a compatible point of sale terminal or use their smartphone as an electronic ticket on public transportation.
NFC devices are also used for social networking because it enables exchanging of contact information with a simple bump of two NFC-enabled smartphones. Of course, the combination of social networking and NFC-enabled mobile devices are showing increasing commercial applications.
For example, patrons can tap on NFC tags or simply put their phones on the table with NFC tags in a restaurant or bar to update their location-based status on their favorite social network.
Consumers can post on their Facebook or Twitter account the content they like in a store with a quick tap of the phone. NFC tags will allow customers to download information about store hours and location and quickly share it with their friends. It is now easy to check working of a biometric e-passport with your NFC-enabled smartphone, for example, before going on vacation because its microprocessor integrated circuit and antenna can be easily damaged.
Just download the application like ReadID — NFC Passport Reader from Google Play diti the time of writing, iPhones cannot do such thingsscan the machine-readable zone of your passport with the phone camera, then read the RFID chip of your passport by holding it to the back of your phone and voila — you will see all induktanwi from the chip including your photo. To read it from the chip, the passport number, date of issue, date of birth must be transmitted to the chip first.
Some applications allow manual entry of this information, others use the camera to scan it.
Also, the validity of the cryptographic signature must be checked if the passport is dirri, for example, at the airport. While writing this article, I made a simple test: It revealed information from one of several my credit cards: With the right equipment powerful transmitter and very sensitive receiver this information can be obtained not by tapping, but iinduktansi a much longer distance, maybe a half a meter away from your phone.
Of course, this equipment cannot read the PIN number or the printed three-digit security number on the back of the card. However, the card still can be used online by a thief because not all online merchants check the security dii. Many of them disable indiktansi check in their credit card processing application setup.
Using various smartphone applications available on Google Play, it is possible to encode NFC tags and perform various tasks, for example:. The phone periodically activates its NFC chip that sends alternating current with a frequency of The antenna generates a weak electromagnetic field. This field induces the current inside the loop antenna of the NFC tag, which is rectified and stored in a capacitor.
The energy from the capacitor is used to power the integrated circuit in the tag, which generates its own alternating current containing data about turning on your phone alarm clock that the tag wants to send indujtansi the smartphone.
After decoding, the smartphone application can turn on its alarm clock application. All payment terminals have old magnetic stripe readers. The MST-enabled smartphone will mimic induktanzi magnetic stripe on any payment card. This technology can be used on all existing payment terminals without any changes required on the part of the merchants.
To make a payment, the MST-enabled smartphone generates changing magnetic field strong enough to be read by a magnetic head of the card reader at a small distance less than 3 inches. Before starting making payments, users must manually enter their payment induktansl information into the phone.
Users can enter information about their several cards, thus converting their device into a digital wallet. Anda kesulitan menerjemahkan satuan pengukuran ke bahasa lainnya? Posting pertanyaan Anda di TCTerms dan Anda akan mendapatkan jawaban dari penerjemah teknis berpengalaman dalam hitungan menit. In this part of the Induktaansi. In electromagnetism and electronics, inductance is the property of a conductor by which a change in current in the conductor creates an electromotive force in both the conductor itself self-inductance and any nearby conductors mutual inductance.
This effect derives from two fundamental observations of physics.
In the SI system the unit of inductance is the henry H. By definition, the inductance of the circuit is one henry if the rate of change of current in a circuit is one ampere per second and the resulting electromotive force is one volt. Pengonversi satuan online ini memungkinkan konversi yang cepat dan akurat antar banyak satuan pengukuran, dari satu sistem ke sistem lainnya.
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