Most mobile chargers use state-of-the-art technology, which essentially turns them into complex works of art. Whilst it may not appear to look like much on the outside, a charger’s anatomy on the inside represents an incredible collection of scientific advancements. The small chargers of today turn the input power on and off approximately 70,000 times per second to maintain the proper output in terms of voltage.
Minuscule Circuit Boards – How Do They Work?
In addition, innovative chargers are made up of two very small-sized circuit boards, one of which is used as a primary board. The primary board manages the high-voltage input circuits of the charger, whilst the smaller board takes care of low voltage output circuitry. These two components work together to facilitate the transfer of power into your device.
Very Small Elements
People who talk on their mobile on a daily basis do not realise the intricacies of the charging components and the complexity of a charger’s internal design. Some of the components can actually be likened to a mustard seed or a grain of rice in terms of size.
Big things come in small packages, especially when you are referring to chargers, such as the iPhone charger. The premium power supply produced by this kind of charger is carefully filtered. That means that EMI interference is substantially reduced.
Definition of EMI
In case you are wondering, EMI stands for electromagnetic interference. This type of interference causes a disruption in the operation of a device when it comes in close proximity to an electromagnetic field.
What’s more, the internal circuitry of a computer generates the aforementioned EMI fields in the radio frequency (RF) range. A cathode ray tube (CRT) display promotes the generation of EMI energy over a broad band of frequencies as well.
Why EMI is Bothersome
These emissions can disrupt the performance of nearby sensitive wireless receivers. So, if you own a wireless receiver, and are using it at the same time you run your PC, you will probably be greeted with RF interference coming from the receiver inside your PC.
How to Minimise an EMI Problem – Why Some Chargers Are Better
EMI can be dampened by making sure that all electronics are operated with the proper electrical ground system. In addition, cables and cords linking peripherals in a computer should be shielded to prevent unwanted RF energy from leaving or entering the system. Some of the components that reduce EMI include capacitors, inductors, and line filters. These parts can be built into interconnecting cables or power cords in an effort to combat issues with EMI.
Making an Informed Decision
When you realise that EMI can be prevented, you’ll naturally want your charger to have this capacity. In the case of such mobiles as the iPhone, the charger is considered to be “magic” in this respect. For instance, the primary circuit board protects the charger’s high-frequency components with a grounded metal shield. The transformer on the charger also includes a shield to absorb EMI frequencies.
Knowing this type of information enables mobile users to make more informed decisions when choosing a mobile device and charger. Although a charger may appear to have a limited capacity, the exact opposite is true. This is why it is essential that you look beyond just the packaging when selecting any of today’s small (yet advanced) devices and electronics.