1/4/2023 0 Comments Uc3843 24v 3a![]() ![]() * Nëse dëshironi të kuroni ndonjë sëmundje. ![]() Fady kontaktoni nëse keni nevojë për ndihmë. shtatzënë me magjinë e saj të fuqishme, shkrova dhe shpjegova situatën time, më premtoi se do të më ndihmonte dhe do të mbetem shtatzënë para 1 muaji, bëra gjithçka që më urdhëroi dhe shkova në spital për një mesazh dhe mjeku më konfirmoi që jam 5 vjeç ditë shtatzënë, deri tani kam sjellë në jetë djalin tim të pashëm, burri im tani është i lumtur dhe më jep gjithçka që kërkoj, falë Dr. Unë kurrë nuk kam parë një mrekulli si kjo në tërë jetën time, kam kërkuar një zgjidhje për të mbetur shtatzënë për më shumë se 8 vjet pas martesës, kam provuar gjithçka të mundshme, por asgjë nuk funksionoi derisa pashë një provë në internet se si Dr Fady ndihmoi shumë gra të merrnin. This is one of the oldest SMPS circuits I had made. A fuse has been used for protection in case of short-circuit. ![]() NTC has been used at the input side to limit inrushĬurrent due to charging of the capacitor at the primary Output voltage is kept regulated using a zener-optocoupler based voltage feedback loop. The output of the transformer is rectified with ultrafast rectifier 31DF6 and capacitor is used to filter to pure DC. The UC3842 has built-in zener diode that limits voltage, providedĮE25 core was used for the transformer. 50k resistor is used for startup from the high voltage DC bus. High voltage MOSFET (IRF840) directly as it has a built-in MOSFETĭriver. Primary side PWM is controlled by UC3842 chip. I have designed the PCB myself and have wound the transformer myself, at home.ġA offline flyback power supply with UC3842 A fuse has been usedĪ 200-ohm resistance is used at the output as "dummy load". Of the LARGE BULK capacitors at the primary side. Has been used at the input side to limit inrush current due to charging The output inductor is the large toroidal inductor beside Zener-optocoupler based voltage feedback loop. The output voltage is kept regulated using a Rectified with schottky rectifier STPS3045 and an LC filter is used toįilter to pure DC. The output of the ETD39-based transformer is ![]() Power dissipated by the 7812 is not too high and no heat sink is Voltage difference between 7812 input and output is not too great, the Rectified, filtered and regulated to 12V with a 7812 to power the (18V 100mA) is used to provide auxiliary low voltage output, which is 2 bulk capacitors (470uF, 200V each) are used for the The output signals of the SG3525 are fed intoĪ IR2110 high-low side driver which drives the 2 MOSFETs (IRF840)Ĭonfigured for half-bridge topology. Primary side PWM is controlled by SG3525 PWM chip. To be incorporated in SMPS inverter with charger. Final test circuit (on PCB) for battery charging. ![]()
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