power electronics

Hello, I have been tasked to build a Voltage stabilizer (220V, 50Hz). Now I am newbie at this and I dont want to offend anyone here (lol) but I have used Google Gemini to build a circuit. I have made the circuit in proteus 8 but it shows some errors for reasons unknown, gemini tells me its...

Hi everyone, I’m working on a design that steps a 12 V supply up to 24 V using a DC‑DC boost converter to drive a motor. The issue I’m running into is that the 12 V supply is rated for 25 A continuous, but during operation, it briefly sees about 28 A and trips offline. I’ve been researching...

I'm using an AL8843 LED driver and have assembled the circuit according to the datasheet. I used a 390mΩ Rset resistor to set the output current to 256mA. As per the datasheet, I left the CTRL pin floating to operate the driver at maximum power. However, after powering up the circuit (Input...

Hello, I am trying to make supply which can output 48V and 1A current. I found out that LM723 can output 48V if used in floating state. The things is that I calculated everything but when I use the same value Rz resistor which is in the datasheet of 2kOhms my output drops to 45V. But when I...

i wanna make zeta converter coupled inductor as MPPT for solar panel 100WP. I read in many article that in zeta converter the switch usually use PMOS. But in this case i want use NMOS using gate driver IR2101 High Side driver only (not synchronus converter). In simulation the circuit is...

I am a bit new in power electronics, and I made this PCB to control a heating element using burst fire control mode. I am using a burst window of 20 half periods and in the two scope screenshots I am sending a burst of 10/20 half periods. Everything works great when driving a resistive load...

In the following, you can see three images. You can see my solution as well as the correct answer. Can you tell me how and from where the highlighted factor come?

I have a surge tester setup that uses a high-voltage power supply (up to 1000 V) to charge a non-polarized capacitor bank using SW1 to energize Relay 1 in Image 1. The bank discharges into a waveshape network (inductors + resistors) through a high-power relay, triggered by a push-button. Each...

I have developed a synchronous buck converter, but there is something I don't understand. I am measuring the voltage drop across the low-side MOSFET. In my simulations, the voltage drop during conduction of the low-side MOSFET is negative (around -10 to -20 mV). However, real measurements show a...

I want to generate +20/-4 V after A1. Now the A1 output voltage level is 0/1. Thank you.

I'm trying to make a high side driver circuit for my mosfet but am unable to get any output from the driver A possible error might be that the model is not working but I do not know how to test weather the model is imported correctly in ltspice. I I am also making a breadboard circuit of the...

Hello everybody, We are working on a project to stimulate an animal through a high-voltage square wave (+150V to -150V, 100mA, 5kHz). This voltage transferred through two 16-positions electrode array. Only one electrode in each array can be stimulated simultaneously. Our first approach was to...

Hello everyone, I'm currently working on a project that involves designing a DC-DC buck converter to step down a 12V battery input to a stable 5V output, capable of delivering up to 2A for a portable device. While I have a basic understanding of power electronics, this is my first attempt at...

I made my DAB Converter in LTspice and it seems to work whenever the NMOS are replaced with switches but I have no idea why if I just replace them the switches with MOSFETs it doesn't work anymore. As shown in the screenshot if I replace the NMOS for the S1 PWM as well as the S4 PWM, my DAB...

hey hope everyone is doing great, my name is QIK I’m a student working on designing a motor system for an e-bike project. I’m seeking guidance on the best practices for motor control, selecting materials for motor components, and ensuring efficient power management. Specifically, I need advice...

Im currently working on a project for my course (power electronics). No one in my class knows what we are supposed to do. I could just use some direction, thank you this is what I've got so far. When I check the voltage across the resistor, it looks like this.

I want to create a 24v to 12v buck converter. I am trying to control mosfet with optocouplör. I have 25kHz-50kHz pwm signal from arduino/pic16f877A. I have some mosfets like IRFZ44N, IRF540N IRF4905 and etc. I am using PC817 opto but I guess it is not suitable for high frequency pwm like 25kHz...

Hello everybody.I have to implement the in house circuit cc-ih circuit which is an energy harvester circuit using simscape electrical. The description of the circuit can be found on page 7 of the pdf at Finite element-based assessment of energy harvesting in composite beams with piezoelectric...

Hi Everyone, Can anybody explain why R/S flip flop is used in this circuit? I would also like to know how the clock signal should look like in duty cycle? Last but not least, in R/S flip flop's truth table, it's stated that both set and reset pins shouldn't be turned to high state at the same...

Hello all, Disclosure, I am an electrical engineer but I deal with designing power system for construction projects. I decided to go back for Masters in Power Electronics. I'm rusty with DC circuits. My homework is the same as a previous thread...