Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.
Features:2 in 1 designuper wide 0.45X wide angle lens+12.5X macro lens, with the 0.45X wide angle lens, broaden a wider vision, perfect for taking pictures of larger ranges, especially ideal for group shots , which can hold a large group of people in one photograph perfectly, no dark corners.
Clear imageIt is designed with a single-lens convex structure, multi-layer coating, image and clear picture.
Hight quality material The lens is made of aero-grade aluminum and German optical glass, the surface oxidation of multi - channel process surface is stable and the protective lens has more texture.
Microscopic photographyThe macro lens is great for taking picture of a tiny object in detail, ideal for taking flowers, grass, coins, Insects, etc. With it, the whole world scenery, taken in your cell phone, a high quality cell phone camera lens, makes good memories to be continued.
Universal usingSuitable for most smartphone, ipad, tablet with diameter of camera is smaller or equal to 13mm
Incomparable quality: unique camera lens appearance makes it stylish and sleek, soft rubber clip is easy to adjust and wont leave any scratches or marks on your mobile device.
InstructionsWide angle lens and macro lens are screwed together, to use macro lens, you need to separate the two lens by unscrewing, then, keeping 1-2 cm distance from the object, you will get more crisp clear pictures, and to use wide angle lens, you must leave the two lens screwed.
specification:
Type Phone camera lens
Material Acrylic lens / aluminum alloy / ABS
Quantity 1pc
Color Black
Compatible with Most smartphone, ipad, tablet
Remove direction Spin the split counterclockwise
Lens size Wide angle lens: 5.2*1.7cm / 2.1*0.7"(D*H)Macro lens: 4.1*1.3cm / 1.6*0.5" ( D*H)
Clip size 6.2*4.2*2.6cm / 2.4*1.6*1.1"(L*W*H)
Clip open width Max 3cm / 1.2"
Net Weight 0.083kg / 5.9oz
Package 1*0.45X HD wide angle lens1*12.5X Macro lens1*Universal clip1*Top lens cover1*Bottom lens cover1*Packing leather bag1*Package box
Packing list
1*0.45X HD Wide Angle Lens
1*12.5X Macro lens
1*Universal clip
1*Top lens cover
1*Bottom lens cover
1*Packing leather bag
1*Package box
Specification:
Type: Phone camera lens
Material: Acrylic lens / aluminum alloy / ABS
Quantity: 1pc
Color: Black
Compatible with: Most smartphone, ipad, tablet
Remove direction: Spin the split counterclockwise
Lens size: Wide angle lens: 5.2*0.7cm / 2.1*0.3"(D*H)
Macro lens: 4.1*1.3cm / 1.6*0.5" ( D*H)
Clip size: 6.2*4.2*2.6cm / 2.4*1.6*1.1"(L*W*H)
Clip open width: Max 3cm / 1.2"
Net Weight: 0.083kg / 5.9oz