1, unidirectional thyristor of 600V working current 6A, unidirectional thyristor. Used for overvoltage protection and overcurrent protection. The long foot is the trigger pole, the middle foot is the anode, and the short foot at the end is the cathode.
2, the commonly used integrated circuit of the electric car charger is 555, and TL494 is also more commonly used. Microcontroller is actually a microcomputer.
3, generally between 10-30V. 7 is the power pin, and 20v is normal. In general, replace a 3842 directly to ensure mos no breakdown, disconnect the gate, power, multimeter test 3842 pin 6 swing voltage can be basically.
4. PF7001S. The electric car charger 14 pin chip is C043 domestic label, is double D trigger, model PF7001S. Power management chip (PowerManagemenTIntegratedCircuits), is in the electronic equipment system for transformation and distribution of electrical energy, detection and other power management responsibilities of the chip.
5, uc3842 LM324 chipThe circuit is faulty. [Solution] It can be checked according to the following aspects: The output voltage after rectification and filtering is measured whether it is normal. Measure whether the output of PFC power factor correction circuit has ten 380 V voltage.
3, Samsung PS43F4500AR power supply board maintenance methods are as follows: ①→ detection, rectified and filtered 300V voltage is normal. ②→ Detection, power factor correction circuit output end of the ten 390V~ 400V voltage is normal. ③→ Detect whether the 15 VSB voltage at the output end of the sub-switching power supply circuit is normal. ④→ checkCheck whether the on/standby control circuit components are normal, and whether the standby control triode and other components are also normal.
4, power board commonly used ic: 6841203d06, these commonly used pmw chips in my professional LCD accessories store can be bought.
is nothing more than input, output, enable, decoupling, sampling feedback, several, according to the circuit diagram is still relatively easy to see. Therefore, the chip model comparison symbol SOT-23-6 sealThe features of the installed MP2259DT are as follows: pin 1 is bootstrap capacitor access pin, pin 2 is ground pin, pin 3 is feedback pin, pin 4 is enable pin, pin 5 is input pin, and pin 6 is switch drive output pin.
To find the model of Hisense TV power board, you first need to find the logo or label on the back of the TV. On Hisense TV, there is usually a metal or plastic sign board with various information about the TV engraved on it. You can carefully review the text, numbers, and ICONS on the sign board, which may contain information about the power board model. If you can't find the sign plate, you can look at other locations on the back of the TV, sometimes model lettersIt will be posted elsewhere, too.
First of all, the above is the manufacturer, the following is the number, and the middle is the model. The second type is composed of numbers and letters (basically all containing numbers). Finally, the Haiguang chip can see the model and complete the operation.
The printing on the chip is generally not the model, and can only be inferred by comparing the typical application circuit of the common 6-pin power supply chip with the physical circuit: OB2532 is a six-pin switching power supply chip, with 1 pin being GND end, 2 pin being GATE end, 3 pin being CS end, 4 pin being INV end, 5 pin being COMP end, and 6 pin being VDDEnd. Using this chip plus a switching power supply pulse transformer is very easy to form a switching power supply.
Use six-pin switching power supply chip to make switching power supply, OB2532 chip can be selected. OB2532 is a six-pin switching power supply chip, 1 pin is GND end, 2 pin is GATE end, 3 pin is CS end, 4 pin is INV end, 5 pin is COMP end, 6 pin is VDD end. Using this chip plus a switching power supply pulse transformer is very easy to form a switching power supply.
The charger board circuit in the IC power management chip models are numerous, itThey each have different characteristics and application scenarios. Here are some common power management chip models that have a wide range of applications in charger board circuits: AC/DC conversion chip: TPS92411: This is an efficient, compact AC/DC conversion chip for a variety of power applications. It provides a stable output voltage with excellent efficiency.