inverter

Help! I have an old natural gas engine that I have designed a Capacitor Discharge Ignition module for. The module uses a pre-made boost circuit that takes 12vDC from a truck battery / solar cell and boosts it to 350vDC that I then route to my ignition circuit. This worked great on the bench...

The output of the KL MMA 160 inverter igbt arc welding machine is 52 Volts and as it should be. The fan is also working. 4 High-Speed Switching Diodes (1N 4148 5T) diodes exploded on the Transformer Rectifier circuit card of the machine, I replaced them with new ones, but it still does not...

Can I use BT139-800 or BT139-800E ? I am a beginner in electronics and trying to fix 875VA & 675VA inverter boards. Both inverters have problem in charging section. one inverter is taking high current from battery while inverter is on and then battery low indicates then inverter goes off and...

Is there such a thing as "If all the IGBTs are good, then all the SMD resistors, capacitors and zeners on the legs of the IGBTs are good" in the inverter welding machines? That is, as long as at least one of the IGBTs does not explode, will the SMD elements underneath remain intact?

The outputs of the FIMER 201 welding machine give 0 Volts and a clicking sound is heard from the control circuit and the yellow and green light lamps are constantly flashing. The Output Voltage is fluctiating. Why is the machine giving this error? What should be done to fix this fault? Which...

Here is my Hardware Interlock Circuit for Gate Signals which prevents both PWM Signals to be at same state at any given time. Here I want to reduce this two AND Gate IC's into a Single AND Gate IC. Or Is there any other way to implement the Hardware Interlock for Gate Signals ? Is there any...

Hi all, I refer to this website at here . This circuit should give a complementary square waveform (R1 square wave & R2 inverted square wave). However, I did get a good square wave across R2 but R1 did not get any square wave. Does anyone know how to fix this? I have attached my LT spice below...

I am building this solar powered inverter: https://ibb.co/58m5L8B using a 12V, 0.8 Ah battery as the input source and a CD4047 IC for the inverter. However, the resistors connected to pin 2 are rated at 0.5W and the IC has a maximum power dissipation of 500 mW. I want to keep the efficiency of...

What is simplest circuit to convert DC to AC when using a battery and a tranformer?

Hi Community, I am currently studying delay propagation in inverter buffers and the properties of FanIn and FanOut. In the data-sheet we can find the two values of Cin and CLoad. I would like to know how to measure them in practice and determine the values FanIn and FanOut? Here the Datasheet...

Hi! I copied the DC-AC circuit from here, or specifically speaking this image (I didn't used the diodes because I think they are useless in described configuration). However when I observe AC voltage using DMM, I get the following results: 1. 5W LED bulb with capacitor shows voltage 37.4V 2. 5W...

I have made a full-bridge inverter using the IR2110 IC. The MOSFETs used are IRF540n. The bootstrap capacitor is 4.7uf. The diodes used are 1N5819 high-frequency Schottky diodes. The operating frequency is 50KHz. The input signal is given using an Arduino Uno. 1.5kohm gate to source resistor is...

Hi. I'm trying to simulate this full-bridge single phase inverter for a project at school in PSpice. As the main objective is picking the IGBT switches and making them work in a full converter, I am just using a simple pulse voltage source for the modulation. I made it work with the default...

Hello, I am currently designing a modified sine wave inverter using SG3525 as push-pull and ATMEGA238P as H-bridge drive signal generator and for other monitoring purposes. I don't want to use an H-bridge driver ICs so I want to implement some part of this design by Texas instruments...

Hello, I have been designing a full bridge single phase inverter. It's bus voltage is 20Vdc. There is enough of dead-time for Vgs signals between the-same-leg mosfets and they are driven by gate driver. I checked Vgs signals for the-same-leg mosfets and saw the dead-time clearly. At each power...

I want to do load sharing in between ac mains and inverter? But How it can be done. In the above line, many experts will not understand the question, so I am just explaining a simple example below:- Suppose we need to drive a load of 10 kW( load can anything or mostly all the loads are combined...

I acquired the battery in subject from one of the local recycle groups. It consists of nominally sixteen 3.2V 20Ah LiFePO4 pouch cells arranged in 8s2p configuration (pouches in pairs soldered to a PCB that puts them in series). One of the pairs developed a fault and was desoldered and removed...

I'm not sure if this is the right place to post this, so please advise if this needs to be moved. The question deals with 4 mis-matched solar panels on an RV roof. Yes, it is a bad design, but the RV mfg is no longer in business, so there you go. I am somewhat knowledgeable on solar array...

Hi, I am trying to design a closed loop inverter in Simulink, I tried to implement the control technique used in the reference design available in Matlab Help section, but the output is not the expected value. When i simulate the reference design the output is exactly the desired value. Kindly...

Hi , I am designing a closed-loop sine pwm three-phase inverter with an output power of 60kVA with a phase RMS voltage of 115. I am struggling to design the LC filter for the system to convert the square wave output into a sine wave. Please help with the design of the filter. Thank you...