Questions tagged [inverter]

Electrical device that converts direct current (DC) to alternating current (AC).

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26 views

How to create timing waveforms for an H-Bridge Inverter

This is my first question on Stack Exchange. I am in the process of simulating a wireless charger coil setup on LTSpice. I have tried a Royer/Baxandall oscillator to provide the necessary sinusoidal ...
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3answers
78 views

Do home UPS (mostly advertised as inverters) have a rectifier built in?

This is regarding home UPS/inverters which are typically known to convert the DC from the battery to AC, so the AC can be used for household purposes. What I don't understand is how the batteries are ...
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88 views

how to design a circuit that gives high output between input transition and next rising edge of CLK

I'm trying to understand how can one build a circuit that does the following functionality: I see according to the output that I should have a D-FF, that works at Falling-Edge mode, so I need to add ...
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23 views

Can I connect an inverter and a solar charge controller together in parallel with battery terminals?

I have an inverter works on AC mains and has battery charger inbuilt. I have solar panels with a charge controller. Can I connect both power sources wires to battery terminals in parallel. So In case ...
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39 views

Can a voltage peak detector circuit detect square wave overshoot voltage?

I'm building a simple inverter with an inductive-capacitive load. I wonder if I have overshoot voltage like this on my IGBT: I want to detect this overshoot, but since I don’t have an oscilloscope I'...
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38 views

Phase lag in output 3 phase 2-level inverter ouput

I am trying to simulate a 3-phase, 2-level inverter connected to the AC grid in MATLAB, using sinusoidal PWM pulses generated by taking reference from grid voltage. source voltage(phase rms)=220v; ...
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1answer
53 views

Rising Edge vs Falling Edge D Flip-Flops

Is there any difference between a rising edge and a falling edge triggered D flip flop? For example, a falling edge flip flop will be faster or if there will be any change in result. Is it correct for ...
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2answers
65 views

What is the role of the Op-Amp integrator in this circuit?

Helo dier community! I got a 400 Hz broken Power Inverter and reverse-engineered the circuit just for the simplicity of repairing it. Then I got deeper in and started to understand the engineering ...
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115 views

What type of op-amp configuration is this?

If you need more info I will provide it. The op-amp board is piggybacked on an inverter driver board.
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13 views

Transformer Power Rating for CCFL Inverter

I'm trying to design an CCFL inverter using the UCCx972/3 but I am a bit confused about the power rating for the transformer The lamp I'm using has the same operating voltage and striking voltage of ...
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3answers
52 views

Why the input capacitance value decrease as the input voltage increases?

Following is the screenshot of the logic CMOS-inverter curve (Input capacitance vs voltage). Why the input capacitance decreases with the increase of input voltage?
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What scheme would you indicate for a nobreak system with variable frequency output?

I'm pretending to make a system that charge batteries (or a single battery) and then produces 3 independent AC outputs (all having the same common, in a star connection). But I want to have ...
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111 views

How to convert 12 V DC to 12 V AC 50/60 Hz PSW?

This started with me trying to power 12 V AC LED swimming pool lights - which are always spec’d as AC for historical (and consequently safety certification) reasons - from a hefty 12 V DC leisure ...
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Can you make a CPU out of electronic components drawn by hand on paper?

I explored a lot of literature about paper-based electronics recently, and one particular paper caught my interest: “Handwritten Oxide Electronics on Paper” (DOI: 10.1002/admt.201700009) by Elvira ...
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62 views

How load sharing can be done in AC mains and inverter? [closed]

I want to do load sharing in between ac mains and inverter? But How it can be done, I have no idea. In the above line, many experts will not understand the question, so I am just explaining a simple ...
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47 views

How to determine the efficiency value of the inverter we design?

I designed an inverter with a maximum input voltage of 20 volts. I want to make a specification of the efficiency of the inverter that I made using the formula efficiency = (output power / input power)...
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57 views

Two transistor pair inverter and one transistor pair inverter

Today I made DIY inverter (the top one) I managed to achieve ~2 volts from 5V usb, everything seemed to be ok. But I have question - is this the right way to make inverter? I also found the bottom ...
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1answer
43 views

Synchronizing sine waves from solar panel and grid electricity [closed]

I am new to the field of solar panel. I would like to install and use the electricity produced by the solar panels (through inverter) directly on the appliance, e.g. a fridge. In case of cloudy sky, I ...
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1answer
59 views

Inverter design

I need to design a DC to AC inverter circuit that will take a regulated DC voltage (likely in the 10V to 12V range) and convert it to 120VAC at 400Hz, with an AC current draw of 0.3A. I have looked at ...
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28 views

Simple rectifier, solar to 18v ac

Would it be possible to charge a Ring video door bell from solar power, but using the doorbells external pins for the wiring of a 8 to 24v ac transformer. Say using a 12v solar panel, would regulation ...
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26 views

BLDC motor inverter function

I would like to know which inverter function is correct for BLDC motor model simulation. I want to create mathematical model of this scheme: where BLDC motor model is created based on "http://...
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1answer
71 views

Why does my CD 40106 and CD 4069 inverters have such a bad output signal shape at 10 MHz?

I am measuring both the 10 MHz (5V pk-pk) input signal, and the output signal of the above mentioned inverters. Why does the output signal looks so much different than the input? I have decoupling ...
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36 views

Eliminate transient loss of power due to inverter (UPS) transfer time

I have a 120V AV receiver (amplifier) connected to a step down transformer for converting from 230V mains. This is the only electronic equipment in my home to completely lose power and turn off/on ...
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44 views

Finding a I/O expander that supports 18 PWM outputs or another solution for MOSFET control

I am a student working on a university project. I need help figuring out how I can supply 18 PWM signals to 18 gate drivers, in a 3-phase inverter. The inverter is built up of 3 half bridges, with 6 ...
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83 views

How to communicate and control conventional inverters from Arduino Micro controllers/FPGA boards? [closed]

I want to communicate and control the conventional inverters with the help of Arduino microcontrollers/Raspberry Pi /FPGA boards. Suppose we will send PWM signals to the gates of MOSFETs or IGBT's, ...
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2answers
45 views

Noisy top peak of clock signal with CMOS inverter circuit

I have built this clock circuit (with a 4MHz crystal rather than the 1Mhz shown in the image): I am concerned about the wave form that I see on my scope. It doesn't look very clean on the top (see ...
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1answer
56 views

Isolation transformer = floating ac inverter [closed]

Its said that, in AC power system at power station neutral and ground connected together because of this reason we get electrical shock, as neutral and standing ground are same. Assume, if I power a ...
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4answers
96 views

Why do we not use true sine waves in power inverters instead of PWM?

These days it seems all power inverters use variable PWM and an H-bridge to generate the signal which drives the output transformer. Why do we not use a pure sine wave oscillator and amplifier ...
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50 views

Choosing a correct transformer for a power inverter?

How does one choose a proper main output transformer for a power inverter? Is enough to simply use a "standard" transformer "in reverse"? Also, do toroidal transformers convey any ...
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1answer
57 views

Inverter output frequency is 46 Hz but it should be 50 Hz, will it cause any problem?

I bought a car inverter (150W.) The inverter output should be 220V 50Hz (in Turkey) but the output is 227V 46Hz. I think the voltage is at a reasonable value but is the frequency OK? I measured the ...
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3answers
56 views

Can a double conversion UPS energize grid-tied micro inverter solar array during power outage?

Hypothesis: Can a double conversion UPS energize a grid-tied micro inverter based solar array during power outage if the UPS input and output are both connected to main panel? Assumptions below ...
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64 views

BLDC motor simulation

I would like to simulate BLDC motor in programming language other than Matlab or Simulink, but have problem with several equations and inverter output. BLDC motor scheme is following: After searching ...
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1answer
77 views

How does the photovoltaic inverter synchronize with the grid?

My question is somewhat related to this one. Most of the 3 phase inverters used for photovoktaic (PV) on grid installations can work only if there is AC voltage present. After the AC voltage ...
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40 views

The working logic of CMOS inverter

Below is a CMOS circuit for an inverter (or NOT gate). According to the book I am reading, when \$V_{x} = V_{supply}\$, \$T_{1}\$ will be turned off and \$T_{2}\$ will be turned on. So \$T_{2}\$ will ...
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27 views

Fine delay tuning using phase interpolation

In the schematic of fine delay, each unit should produce 3ps delay, so the fine delay block is constructed using parallel combination of 8 inverters... Like that parallel combination of inverters we ...
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1answer
58 views

Help with LTspice inverter simulation

I am trying to simulate a basic inverter circuit in LTspice. For some reason I am unable to obtain 48V peak to peak across the resistor R1 which only shows about 6Vp-p (indicated by the blue square ...
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64 views

Wiring for solar powered house [closed]

I am trying to design electrical wiring for a small 1-bedroom house which will be only powered from solar panels. The minimum appliances in a house would be: Appliances available in 12V DC: LED ...
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1answer
120 views

Will a Tesla coil work with a square wave inverter output, used as input?

I wanted to try an unusual thing, I couldn't find enough resources explaining this approach. Few days back, I built a fairly simple CFL inverter using a TL494 IC and a couple of power transistors. It'...
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1answer
59 views

How do I Drive High Side MOSFET in High Voltage Low Power DC-AC Unipolar Converter?

I'm working on a simple dual stage piezoelectric driver consisting of a DC-DC flyback converter (programmable from 50V to 250V) and a DC-AC half-bridge unipolar inverter. The flyback converter is ...
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2answers
103 views

Why did my 12v battery charger blow, when connected to a 12v battery in a 48v bank?

this is a puzzler here. I have a 48V bank of Battleborn lifePO4 batteries connected to a huge 10kva inverter. When I tried to charge one of the 12v batteries while the pack was still connected to the ...
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3answers
85 views

How could you (in theory) run an induction cooker from a DC supply?

What would be the most efficient way in thoery to build an induction cooker (hob) to run from DC power at low (ish?*) voltages? I say in theory, so the answers are not limited by products that exist ...
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69 views

What happens if the BEMF generated while going downhill is higher than the supposed applied voltage to the motor terminal by the inverter?

If a brushless DC (BLDC) motor is moving fast ( the case of ebike going downhill,) what happens if the back EMF (BEMF) generated while going downhill is higher than the supposed applied voltage to the ...
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80 views

Power projector with car inverter [closed]

I have this projector which takes in 19v and has a power consumption of 65 watts. I want to buy a 12v 6A car inveter, that plugs in the cigarette lighter, which would give me 72 watts. The question is ...
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1answer
73 views

Ferrite core StepUP Transformer Design

So, I want to make a High-Frequency Ferrite transformer that can convert my 150-volt peak Square wave into 100000 Volt Peak. I am using UUR6440 Ferrite Core. Material is CF139 https://www....
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60 views

How to create phase (hot) and neutral in single phase inverter?

simulate this circuit – Schematic created using CircuitLab I have made a single-phase 50 Hz-220 volts (RMS) inverters. I thought that one of the outputs will be hot and another one will be ...
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Appropriate fuses for inverters?

I have a 2000w inverter in the camper-van I just bought and I am getting my hear around the whole electrical set-up in general. There is a 30A fuse in-line between the 12v leisure battery which the ...
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22 views

Photovoltaic systems - typical values of electrical current

SOLAR PANELS -> CHARGE CONTROLLER -> [shunt A] BANK OF BATTERIES [shunt B] -> INVERTER - AC OUTPUT What are typical values (to give examples) of electrical current on shunt A (current in on ...
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64 views

Open loop PWM with SG3525

I have seen the same issue posted here with TL494, but The feedback pin set up in that IC, seems to be different- so that I cannot adapt it here. I got an idea about how to implement a closed loop ...
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1answer
60 views

What advantages does CPLD have w.r.t microcontrollers in driving MOSFET drivers in inverter?

I have seen some designs where CPLDs have been used in driving the MOSFET driver in an inverter circuit. What advantage does is provide with regards to driving the same using controllers like TI ...
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43 views

Six-step (trapezoidal) BLDC motor driving strategy

It seems that a common driving strategy for such a motor is to use the 3 half-bridge topology depicted above, and use PWM to regulate speed and/or torque. At any given moment, two phases ("wires&...

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