smps

Hi guys, I am working on 12V 30A smps that has only 1V output. I haven't got board's schematic but I found one same like mine( Schematic Link). I measured high voltage capacitors (C2 and C3 on the schematic.) and bridge rectifier. They are working. Also checked power switching transistor on...

i have a power supply of 24 volts and the circuit consist 103aiw dual op amp till 14 volts the power supply output stays stable but further more it's starts fluctuating but when load connected the voltage become stable please help me to find out the reason why without load the op amp don't work...

Please I have some couple of 3.6v 3Ah cylindrical li-ion battery, but since I bought them, charging it became a huge problem. I first connected a single one to a 2A infinix phone charger (made in china. According to the ratings, it capable of adjusting output current and voltage to load)thinking...

Please am studying about switching power supplies, starting from the simple ones. I've just concluded on joule thief and blocking oscillator, now am progressing to Self oscillating flyback converter(or RCC) and am finding a bit difficulty on how the transistor switches OFF. It seems the...

please am a beginner in electronics and am just getting to understand simple basic self oscillating circuit so i got stumbled in the so called one of the easiest self oscillating circuit, "the blocking oscillator". The information I get in many website are so confusing and contradicting...

I have been reading about the concept of a flyback transformers and converters, which has led to various misunderstandings concerning the basic operation of a transformer. Firstly, dc current don't induce voltage in the secondary windings of any transformer. But in a flyback converter, I read...

Hello! I am working on automated pressure controller which will be used in a car. The controller consists of following: - Power supply (10V-20V input, 5Vdc 1A max output) - MCU STM32 (valve controller for pressure regulation + reading 4 pressure sensors) - WiFi functionality (ESP8266) - 8...

I'm sure I'm missing something very fundamental here, but I've built a boost circuit on a breadboard (see attached schematic) to convert 5v to 12v using an LM2577-adj. I want to power a 12v PC fan (rate at 12v at .06A) as the load. The LM2577 seems to work fine, as I'm measuring 12v. The fan...

Hello, I am designing full-bridge SMPS with a linear voltage stabilizer in LTspice. When I was making measurements I discovered that the maximum efficiency of my power supply is around 30% at full load. Project assumptions: Input voltage: 230 AC Output voltage: 0 - 25 V DC Output current: 5 A...

Hi everyone, I'm trying to make a 48V to 400V full bridge dc-dc converter and I'm using SG3525 as pwm IC. The question is; should I apply my 2-pole 2-zero compensation to the error amplifier on sg3525 or build a type-3 compensation on feedback part with tl431. (you can advise another method if...

Hi, I need to design a DC DC Converter Circuit: 48v to 12v DC 10A Max Current with Isolation. Anyone, please share reference design/Schematics if any.