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August 28,2024

The correct steps for selecting a self recovering fuse model

　　　　1. Determine the following parameters of the circuit:　　● Maximum working environment temperature　　● Standard operating current　　Maximum operating voltage (maximum)　　Maximum fault current (Imax)　　2. Choose a resettable fuse that can adapt to the highest ambient temperature and standard operating current of the circuit.　　Use the table below and select the temperature that best matches the highest ambient temperature of the circuit.　　Browse this column to find values equal to or greater than the standard operating current of the circuit.　　3. Compare the maximum electrical rating of the selected component with the maximum operating voltage and fault current of the circuit.　　Use electrical characteristics to verify whether the components selected in step 2 will use the maximum operating voltage and fault current of the circuit.　　Check the maximum operating voltage and maximum fault current of the equipment.　　Ensure that Umax and Imax are greater than or equal to the maximum operating vo

August 09,2023

Where are car plug-in fuses usually located in cars?slow fuse photography

　　　　With the continuous upgrading and upgrading of many products, the current electronic products have increasingly high requirements for fuses. In order to protect the circuit safety of various products, fuses also need to be continuously improved. There are many types of fuses now, such as disposable fuses. Self restoring fuses, patches, inserts, and other fuses in different packaging can be applied to high-voltage and low-voltage working environments according to different types of fuses. Nowadays, fuses are becoming increasingly important in many electronic circuits.　　Insert fuses are common components in circuits, with a wide variety of unique functions, and are an important component of the normal operation of daily circuits. Insert fuses are also commonly used in automotive fuses, and automotive insert fuses are generally used for the following purposes.　　At various key points (or parts) of the car line, there are generally plug-in or tubular fuses, such as ceramic and special j

July 19,2023

Breaking capacity of glass sealed fuse.ptc reset fuse

　　　　Also known as rated short-circuit capacity, it refers to the maximum current value (AC is the effective value) that a fuse can safely break under rated voltage. It is an important safety pointer for fuses. The code for breaking capacity is Ir.　　That is, the time/current characteristic (also known as the ampere second characteristic). There are usually two expression methods, namely I-T diagram and test report. The I-T diagram is a curve formed by connecting the average fusing time coordinate points of fuses under different current loads in a coordinate system composed of load current as the x coordinate and fusing time as the y coordinate. Each model and specification of fuse has a corresponding curve that represents its fusing characteristics. This curve can be used as a reference when selecting fuses. A test report is a record of test data conducted in accordance with standard requirements for testing projects. Our I-T chart and test report are both based on the data measured und

August 18,2023

Will plug-in fuses be phased out?resettable ptc fuse

　　　　In fact, this is not the case. Although patch fuses have a wider range of applications than plug-in fuses, there is also a high demand for plug-in fuses in the market. Both types of fuses, patch and plug-in, have their own advantages. For different products, selecting the right one can maximize the effectiveness of the fuse. Currently, plug-in fuses will not be eliminated.　　Taking self recovery fuses as an example, the volume of patch based self recovery fuses is different from that of plug-in based self recovery fuses. Plug-in type fuses have a relatively larger volume and are generally used in circuits with low working voltage and high working current, such as power converters, motorcycles, automobiles, computer power supplies, micro motors, computer interfaces, CPUs, and other fields. And patch type fuses are mostly used in many electronic products and in many circuit boards such as mechanical equipment.　　With the development and progress of technology, fuses are not only limite

December 04,2023

ptc-100 programmable thermal controller manual.Electrical testing process for self restoring fuses

　　　　I hold current　　I hold, high non operating current (maintenance current), refers to the high current that PPTC always maintains its low resistance state at the specified ambient temperature (priority 25 ℃).　　I hold: maintain current;　　V max: withstand high voltage;　　T trip: specifies the large action time under the current;　　R: Zero power resistance measured at a certain temperature;　　I trip: action current;　　I max: The maximum current that can be withstood;　　P d: steady-state power consumption in high resistance state;　　R 1max.: The high resistance value measured at room temperature after one hour of action or soldering.　　Let's take a look at the internal structure of the device, as shown in Figure 4. Place the test sample in a specified temperature and condition test box, connect the PPTC to a constant current or constant voltage source, and preset the current value to the specified I hold, with the voltage limited to 90% of V max. After the specified time in the detailed specifi

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Fuseless car charger, carefully burn your phone

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2023-04