Usb kiểm tra nguồn điện có màn hình led tiện lợi chất lượng

Usb3.0
Product description:

In kind is voltage upgrade, measured voltage ranges 3.3-9.99v, the peak current is 3.00a.

3, in vod (V), e.g. 5.20v. Within range error less than 1%

3-bit blue digital tube represents usb input current. Less than 1a, in ma, show 2, show, represent, say, 2ma Display 15: Representation 15ma

Current greater than 1a, the display unit is ampere (A), e.g. 1.00, representing 1.00a.

The instrument uses imported lv321 current operation amplifier ic, 140-fold magnification factor, use of 5 msc current sampling resistance, therefore, compared to the peers of 50 mse more precise. Stable display of 1ma current, small current range within 1a, measurement error is less than 0.5 ma, 4a large current range is less than 1%.

Overall electricity consumption (25v) 8ma, normal working current 6ma, working current 2ma (Close screen lights)

12v, display voltage of 9.99 v. Pressure resistance 32v,

Power loss storage technology. Test capacity, for example, accidental power outages, when the voltage falls to 2.2v, instant triggering internal storage circuits, amount of electricity saved using tantalum capacitance, storage capacity values, there is nothing to lose. Write it by telegraph. Similar products of peers, every ten minutes, even write one, one mobile phone, hundreds of records, even thousands of times. Usually external memory is accidentally damaged when writing data, it 's not the memory brush life.



5 ms current sampling resistance, smaller wire loss, means to pass through larger currents, more accurate measurement of dynamic currents. This is reflected in, testing ipad, our display 2a, but similar products sampled by 20 mse currents, such as white tails, showed 1.8a, even some 50 mse samples showed 1.6a.

Some people have some misconceptions, the current instrument that displays 0.1 ma is accurate, but they forgot, no usb device in the world has a working current of less than 1ma, less than 1ma refers to the static current when not working. For example, the second generation bluetooth receiver of rosy as an example, the current is 22 millimeters when connecting to the mouse, 10 milliamps in case of disconnection, if the usb interface is dead or when the computer is shut off (Usb), show 0 ma. Our tester can be simple and clear to display 3 states、 10、 0.。 But peer current meter, small words, there are a few zeros ahead to read first, the number behind is a flash, i wonder which number to write, time-consuming, troubleshoot, it 's hard.

Quick access to valid data within a short time, it is our design that helps us to understand the state of work faster. Our ic can distinguish 0.1 ma, but we only show figures above 1ma, it doesn 't mean we' re worse than the 5-digit instrument in other homes, we only take 3 digits to show more efficient, within 2 meters, there are minor problems and no pressure on vision.

When the input voltage is below 4.5v, or above 5.7v, triggers the light alarm. (Iphone 5.8v)

Design qualified charge