inverter

Hello, I have DC92-02139A inverter board that I took of my washing machine. and I am trying to repair it. Washer shows 3C2 error (Driving part stop(motor overcurrent error)). The motor tries to spin in service mode, but it's only like continuous twitching a little bit. I tried to change some...

I have a clock, based upon a NE555 oscillator, with its pin 3 (Q) being fed into a pin 1 of CD4069 However the signal from output of pin 2 of the CD4069 is incorrect. Pin 1 input = 0 volt the output of Pin 2 = 10 volts (which is correct) however when Pin 1 input = 10 volts the output of Pin 2...

Hello all, I have a Bidirectional, Dual Active Bridge board that is based on the TIDA-010054 from Texas Instruments. However, whenever a DC bus is applied (even as low as 50 VDC), the 3.3 V PWM signals at the power board exhibit strong ringing/glitches correlated with the switching edges (PWMs...

I have an inverter that has blown 3 SMDs i have narrowed it down to either caps or resistors. Is there any way that you guys can help. These components blew when the client ran their inverter off the car battery when the car was running. So I'm guessing over voltage.

I have a solar system with an on-grid (grid-tie) inverter, which only works when there is an active grid supply. Unfortunately, I live in an area where there's no grid power for most of the day, so my solar setup goes unused during that time. Buying a new hybrid inverter is quite expensive and...

Hi! I tried to simulate a high voltage filter with switching elements. The input is a high voltage DC supply which supplies a 3 phase inverter, the switching frequency is 20kHz. The simulation software is LTspice, where I built the filter firstly with the help of it's transfer function, and...

Hello, I am trying to make a simple inverter pcb but my output is a square wave instead of the expected spwm. I suspect that some capacitance or inductance is built up due to the pcb layers that alters the gate signal. My traces going to the mosfet gates are quite wide (1.5mm) and their length...

Hi folks, I have 3 single-channel gate drivers that drive 3 high-power MOSFETs and I want to implement a protection system so that only one MOSFET is ON in this configuration of 3 MOSFETs, even if the software messed up and turned on 2 MOSFETs simultaneously. My approach was something like...

I made an inverter using the full bridge mosfet configuration which worked perfectly. I used transformer 7v-220v for the inverter with a 12v battery, which is a common practice with a pure sine wave inverter. Now, I want to add a charging circuit, in the sense that, the same transformer that is...

HI. In this project we use a egs002 module to generate a spwm which is then fed to the h-bridge mosfets irf3205 the problem is that the final out that is fed to the transformer is around 6volts ac when i use a 12v battery. this happens because the output of the egs002 module is around 11-12...

Hello, I am trying to design a packed e-cell inverter topology (something similar to this). The issue is that I am accustomed to designing bipolar bias supplies for isolated gate drivers, which power conventional 3-phase full bridge inverters using either isolated DC-DC modules or transformers...

This is a purely hypothetical question. Lets say I have a solar panel and I make an "inverter" that produces a 340V (680Vpp) square wave and can perfectly sync with the grid. Since a 240V grid has a peak voltage of 339V my inverter's output is always higher than the grid's voltage, so if I was...

Consider a generator and a inverter. Generator is producing power at 50 Hz and the inverter is producing power at 50.3 Hz . Both of the sources are supplying a common load. From which source the load will take power first?

Hi, I have been working on a duracell 3000 w inverter model drinv3000, long story short, my dad used it with power tools and now it does not work properly, he measured the voltage, and it delivers 104V AC instead of 115. I already checked almost every component on the board (desoldering them...

Hello all, I need to run a 12V/0.6A dc fan to cool the MOSFETs of an inverter with 1kV input. it would be overkill to use some power supply to step down the 1kV to 12V or any DCtoDC converter!.. I thought of using just a resistor divider to step down the voltage to an acceptable range to use a...

Hello all, How do they calculate the split DC-link capacitors and the balancing resistors in the below image? The circuit is a 10-kW, Bidirectional Three-Phase Three-Level (T-type) Inverter by TI. Thank you,

Hello Everyone, I am fairly new to this so please bear with me. I have been looking at reducing the static power consumption in an IC, and have been mainly focussed to reduce the parasitics in the wiring in the BEOL. However, I was wondering that whether in the FEOL, on an n-type transistor...

Hi, i have a small 1.5kW wind turbine which i have hooked up to an turbine protection box. It converts 3 phase wild AC into DC with the addition of a dump load output for grid failures and over speeding. The box is designed to stop the DC voltage of the turbine going above 600v, protecting the...

Hello, I need to repair this PCB. Do you think this board can be repaired without having access to a diagram? From the image what components do you think are burned? I'm a newbie, but where I live I cannot find any place where to repair circuits and I cannot have a replacement board because...