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

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77 views

base resistor value

simulate this circuit – Schematic created using CircuitLab I am a beginner. I want to build this inverter for my academic project. I would be obliged if I could get some help. I am ...
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1answer
38 views

how to get delays of a circuit under process corner in hspice?

my circuit is composed of a chain of inverter (delay line), and i want to see how the delay of this chain of inverter behave in process corner? i want to know if the delay line will be still ...
0
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1answer
66 views

Solar panel subsystem project

I am trying to build a subsystem for a project that I am undertaking in university. An overview of the subsystem can be seen in the attached image. The only difference from my subsystem and the one ...
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0answers
35 views

Inverter simulation in Multisim

I'm trying to simulate this inverter circuit in Multisim: Here is simulation circuit: I didn't find transformer type in first circuit. It is there only to step up voltage, and voltage waveform ...
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0answers
33 views

How does a virtual DC bus provide negative dc voltage in transformer less inverters?

How does the topology (1st pic) eliminate Common mode current found in PV panels connected to grid without isolation transformers?
3
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5answers
646 views

What does the value “Z” in the function table for this inverter stand for?

I came across a simple hex inverter IC with the truth table having "z" as an output state for a low (L) input. So what does Z stand for here? Does it mean a toggle or partial state? The other variant ...
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0answers
27 views

How does decoupling a photovoltaic module from the grid during freewheeling reduce common mode current in transformerless inverters?

Vcm = (Van + Vbn)/2 In Bipolar SPWM the common mode voltage is constant (Vd/2) but in Unipolar , the common mode voltage varies at switching frequency(Vd/2 and Vd).. In unipolar SPWM how does ...
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1answer
74 views

How does this signal inverter works?

I am trying to wrap my head around the circuit mentioned in the accepted answer to this post. It looks like a fairly simple deal except for the part where I wonder what is keeping the signal to LOW ...
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2answers
39 views

Powering a 6-Pin DAC-08B035 LCD Inverter

i have an old LCD Panel(N141X6 -L01) from a Fujitsu Siemens laptop and an inverter(DAC-08B035) for it. Before connecting the whole thing to a raspberry pi(and buying the necessary controller board), I ...
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1answer
55 views

Builing a frequency inverter chimera

Industrial frequency inverters (or "variable speed drives") can be thought in three parts: A mains rectifier, that converts two- or three phase input current to DC, a DC energy storage (large ...
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1answer
47 views

How long will my deep cycle batteries run stuff for through an inverter? [closed]

so ive got 4x crown cr-225 deep cycle batteries saying the following specs, Voltage 6v A.h. Rating 225 (20hr) A.h. Rating 171 (5hr) I've got these linked in series and parallel to give a 12v system ...
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0answers
71 views

Dual line circuit board with invertible amplifier

Am trying to change my circuit and make it one power source instead of two. The circuit is called dual line circuit for flexi-force sensor.This circuit has invertiable amplifier that works a series ...
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3answers
98 views

How do grid tied inverters interrupt grid voltage

I have a common electrical panel fed by the grid. I have a 5.2 kW solar array backed in to the lowest breaker slot on a 30 amp breaker. The system was professionally installed and I never had a ...
0
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3answers
71 views

Auto Switching 12 volt battery under load

I have a 120 V / 60 Hz 2000 watt inverter which can draw up to 200 amps from a 12 V DC battery source. An AC oil heater drawing 6 amps max 15 amps is running from the inverter constantly. I want to ...
0
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2answers
53 views

Battery support capacity for inverter supply of 30A over 3hrs

I need to determine the 12VDC Ah capacity of a battery pack, to provide current to a 30A 120VAC circuit thru an inverter with 88% efficiency, where the voltage must not drop below 10vdc, over a period ...
0
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1answer
51 views

Charged capacitor as output

Ok this is a two part question, it's so that I can make the question as clear as possible. Let's say I have 1 watt of input power into a circuit or device and 1 joule of energy sitting in a capacitor ...
0
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2answers
40 views

Harmonic's equations within Single Phase Full Bridge Inverter

Is it possible to find the equations of certain number of harmonics (Ex : 3rd, 5th, ... 17th) in Single Phase Full Bridge Inverter theoretically, using the characteristics of the components of the ...
3
votes
2answers
83 views

Variable frequency AC power source

I'm looking for a variable AC power source for use in some electromagnetics experiments and longer term for testing inductors, transformers, core material frequency response, and that sort of thing. ...
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2answers
44 views

(MULTISIM) Feeding sine wave into MOSFET - Getting modified sine wave on drain

I am trying do design a HF power supply/inverter for school. I stumbled across a problem. When i feed a IRF740 a sine wave on the gate, the MOSFET gives a modified sine wave on the drain. Why is ...
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2answers
92 views

Why does my 74AC04 not invert my 14.31818 MHz frequency?

I have a crystal oscillator (full can) running at 14.31818 MHz. When I put that on my scope, it shows about 14.3~ MHz. My scope is a ...
1
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1answer
90 views

What is the transfer function of an LCL filter?

simulate this circuit – Schematic created using CircuitLab I read that for grid-tied inverters it is common to use a LCL filter like above, to turn the PWM output from the H-bridge into a ...
0
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3answers
237 views

more current needed in an electrical circuit

Currently, I'm doing my wind turbine electrical project. Let me get straight to the topic, wind turbine, with a small generator in it. Lets say it can produce 2V and less than 1A . It is connected to ...
0
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1answer
54 views

What determines the required bandwidth of current sensors in an electric motor drive?

Most motor drive control systems incorporate current feedback of some description. What determines the required frequency response or bandwidth of the current transducer? Is there any other ...
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0answers
41 views

How do I create a visual and/or auditory indication that an inverter has switched off and the mains are back on?

EDIT I came to know that o/p of inverter is AC. I apologize if I sounded silly previously. To be more specific, How do I create a visual indication an audio indication in my living room such ...
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0answers
35 views

Full-bridge inverter output stage design

For a recent project I've decided to design a full-bridge transformerless inverter for solar use or other things in that neighborhood of applications. I've worked with SMPS designs before but I'm new ...
2
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1answer
71 views

Testing parallel IGBT module

A single NPN IGBT chip can usually be tested by a 9V battery between gate and emitter. However opening up a larger module reveals many IGBT modules in parallel. I`ve seen some inverters using ...
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1answer
32 views

Pulldown doesn't seem to affect inverter?

I have a relay/optoisolator circuit which is connected to a microcontroller. The input/output is controlled by a physical slide switch. I expected this to turn off the relay and status light ...
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2answers
75 views

Solar station gives almost no energy [closed]

I have a solar station on my roof which I use for a raspberry pi. I also have a battery which seems very big for me - it looks like a car battery. The solar cell powers the battery and then the power ...
1
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0answers
47 views

Using SPICE to model dV/dt filter for inverter motor drives

I am starting to learn LTSPICE to create model where I can test various passive filter topologies for inverter drives where the output PWM has very short rise times and high switching frequency. I ...
2
votes
1answer
71 views

Can I replace a complementary N&P channel MOSFET with two separate MOSFETS?

I'm wondering if a complementary enhancement mode N&P channel MOSFET like this one http://micric.ru/data/documents/P2503NPG.pdf which is used as an inverter driver for the LCD display, could be ...
0
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2answers
75 views

Inverter Design - What DC input voltage for most efficient DC to 120VAC inverter

I have seen several online circuit diagrams for a DC to AC inverter. Commonly many inverters use a transformer to step up 12V to 120V. I understand that inverting from DC to AC requires additional ...
5
votes
1answer
117 views

Induction heater circuit problem

I am trying to build induction heater with the help of the following schematics(taken from this page): So I am using 220:10Vrms(15Vpeak) transformer with fullbridge rectifier and a capacitor to get ...
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1answer
100 views

How could this transistor be in saturation?

For this RTL circuit (RTL inverter with active pull-up): The textbook says that in the output high state, Qp is in saturation and the circuit looks like: I wonder how this is possible? $$Rcp = ...
3
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1answer
129 views

Building a Solar Inverter circuit

Recently, I have undertaken a Solar sun tracker project with the soul purpose of learning in mind. The basic operation of the project is to implement a dual axis solar sun tracker, this is done by ...
3
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2answers
54 views

Grid tie inverters and islanding

How do modern grid-tie invertes which are commonly found in solar pv panels and wind turbines actually stop islanding from occurring when the utility grid is down? I know there are a lot of methods ...
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1answer
51 views

What guarantees that RTL inverter is in triode region when the input is high?

in this inverter my instructor says that if Vin is high, we need M to be in triode to have low voltage in the output. now I understand this but I don't know guarantees that it will be in triode. why ...
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0answers
65 views

Why apply enable to the center of tristate inverter?

I see that in design of tristate inverter, the enable signal (and not enable) is applied to the center transistor (the 3rd transistor downward for active high). Why? Could I change the position of IN ...
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2answers
190 views

Trying to read serial communication from smart meter with Arduino

First my compliments for this wonderful site. I'm hoping to find an answer to my problem. I've checked to find answers, however was not able to find it. My background is somewhat technical, only with ...
2
votes
1answer
46 views

How do I use a 680 Volt (DC) solar panel with an off the shelf system?

I've inherited 4 custom built solar panels. These are not consumer grade panels but industrial sized. They produce 680 volts DC at 3.8 amps. The voltage selection was probably selected to minimize ...
0
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0answers
61 views

pwm inverter inductor design

I realized a pwm inverter (full bridge) with these characteristics: Vbus=245V Vrms_out=150Vac Iout=2Arms Fout=50-200Hz Fswitching=25KHz PWM method bipolar Now the problem is the LC filter... I ...
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2answers
91 views

Inverter with capacitor and Zener diode?

Why author of this circuit used capacitor and Zener diode (see the part marked in red below)?
4
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4answers
1k views

How is a PWM signal converted to Sine using a transformer?

How does a sine choke exactly function? In most high power inverter systems, the primary side of the output transformer is always driven by a PWM signal. The secondary output which is sent to a load ...
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0answers
15 views

Microchip MCHV reference design Ic Ia IBus current waveforms

I have built a Microchip MCHV board (ACIM Inverter based driver) from the schematics on the MCHV user manual. ...
1
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1answer
108 views

Can I use a power amplifier for power stage of a pure sine wave inverter?

As the title reads, I wish to use a power amplifier (say OPA541) in the power stage of a 50W pure sine wave inverter? How to find the efficiency of this approach? Since the amplifier itself will be ...
0
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1answer
65 views

UPS and Inverter power supply sync question

I'm new to this but want to ask this question If i'm having a 3 phase inverter with a battery backup system. does it requires it to sync with the utility power? if yes how long that sync can take or ...
0
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1answer
54 views

Inverter with low pass filter?

Is this low pass filter (see the part marked in red below)? If yes, why author used low pass filter in this place?
0
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2answers
75 views

Inverter with two diodes 1N4934 and Zener diode?

Why author of this circuit used two diodes 1N4934 and Zener diode 35V?
2
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1answer
87 views

Multilevel inverter question

I'm curious if anyone can validate the efficiency of a multilevel inverter. I've been thinking about them as a better solution for PV conversion. They seem to have many advantages, but when I look at ...
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0answers
76 views

Most efficient way to phase shift 90 degrees

I'm a Physics grad student and I'm kicking around an idea for a multistep solar inverter. The problem I'm running into is that in order to use all of the panels at the same time without big caps, I ...
0
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1answer
62 views

Building 7 Transistor Logic Gates using And, Or, Exor and Inverter

Hello I just want to know something.. For example, I have this: Let's say I build an AND Gate and an Inverter.. I check the and gate if it satisfies the truth table and upon checking it, it ...