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The most common alloy resistors include surface mount type and lead type. Some instrumentations and circuit equipments require high precision alloy resistors. This type of high precision alloy resistors feature higher precision and lower temperature drift. The metal alloy resistors mainly have below 4 functions. First, shunt effect Resistors have the function of shunt, so do the alloy resistors. For example, when we put the alloy resistor in parallel with a LED bulb in the circuit, the voltage at both ends of the alloy resis...
Date：2019-01-11 [More+]
One of the core components of an electric vehicle is the battery module in the battery management system ( BMS ). Because the electric power comes from the battery, in many cases the battery may be damaged, especially the core component of the battery. if the battery core component is damaged, can the electric vehicle only be scrapped? The answer is no. This is a question that many users have to worry about when they buy new energy electric vehicles. With the development of new energy vehicle technology, especially the upgra...
Date：2019-01-10 [More+]
In the circuit, resistor sampling and Hall sampling are two common current detection methods, which are widely used in automobile electronic current detection technology. Which one is better? Lets analyze the advantages and disadvantages of these two kinds of current sampling. First, the Hall sampling method of current detection. Generally speaking, the voltage signal output from the Hall current sensor is input to the MCU detection method after processing. In many cases, Hall sampling has the advantage of measuring large cur...
Date：2019-01-09 [More+]
Ohmic resistance measurement is one of the most important methods of resistance measurement. In many cases, we use this method to measure resistance. The accuracy of the obtained data is more reliable than that of other resistance measurement methods. In fact, when we understand the basic principle of the Ohm meter resistance measurement, we can see that this resistance test is based on the use of the current passing through the galvanometer, although it is not directly proportional to the resistance to be tested, but it has ...
Date：2019-01-07 [More+]
The popularity of new energy vehicle has close relationship with the development of charging pile technology. Now electric vehicles charge through charging piles and it is different from fuel engine power system in the past. With the development of new energy vehicle, the problems of charging poles emerge. Whether mobile charging piles used precision resistors solve the problem? We know that the fixed charging piles of the new energy vehicles including DC and AC charging piles, which can be installed on the ground or on the w...
Date：2019-01-07 [More+]
The new energy market is very hot in 2018, especially in the new energy vehicles, photovoltaic power generation, wind power and other industries, a variety of new products have been launched. Taking new energy automotive industry for example, a large number of cool techs applications to the rise in new energy vehicles, especially battery management systems and self-driving systems are most obvious. We all know that new energy is the trend in the future. Many new energy vehicles are constrained by battery technology before. By...
Date：2019-01-04 [More+]
The current used by the precision shunt in practical applications does not exceed 80% of the rated current. Although the precision of the precision shunt is small, it can work with a large current. For the voltage of the precision shunt, we use a millivolt voltmeter to measure. However, I need to pay attention to the following points during actual use. In many cases, precision shunts and measuring voltage instruments are used together to directly measure AC and DC currents, calibrate the current functions of various calibrato...
Date：2018-12-29 [More+]
Lithium battery is an important part of the power battery. Under the development of the battery management system, the lithium battery market has developed rapidly and occupied an important seat in the power battery market. At present, the batteries commonly used in power batteries are lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, solar cells, vanadium batteries and fuel cells. Power batteries are widely used in electric bicycles, electronic products, new energy vehicles and ...
Date：2018-12-28 [More+]
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