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

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0answers
42 views

12 V= to 230 V~ boost inverter

I'm trying to build an inverter which consist of two circuit. Those are * a dc-dc boost converter and * a full bridge inverter. When I try to combine both circuits in a simulation and in hardware I ...
0
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1answer
37 views

Divert excess PV energy to floor heating in off-grid cabin?

I'm building an off-grid summer cabin with a solar PV system. I'm planning on using this equipment: 3 kWp PV panels BlueSolar 150W/70A MPPT charge controller Victron Multiplus 3000W inverter 4 x 303 ...
0
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1answer
36 views

In a solar power system, when the panel is off, does the battery determine the wattage?

I am considering putting together a solar system to power my wireless router when the power goes out. I just have one question that I cannot find the answer to: Does the wattage of the solar panel ...
0
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0answers
51 views

Bipolar Transistor H Bridge - low side NPN transistors slow to turn off

I've been trying to build an H-Bridge from bipolar transistors. Here are my parts for the schematic below Q1, Q2 - A1694 Q3, Q4 - C4467 Q5, Q6, Q7, Q8 - 2N5551 R2, R3 - 100 ohm R5, R6 - 50 ohm R9, ...
1
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0answers
21 views

3 square wave pulse by 120° phase shift and 3 inverted of each by Arduino [migrated]

I want to make a three phase inverter (DC to AC) bridge type using Arduino. For that I want to generate three square wave each is 120° phase shifted and other three waves of main three waveforms ...
0
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1answer
19 views

lipo pack to 16vac inverter design

Im looking to drive a 16 vac solenoid from a battery pack. Specifically I want an electric door catch to function when mains are down. I want to do this with out with out using a commercial UPS. Im ...
2
votes
2answers
79 views

How “slow” is a Class T “slow blow” fuse?

I have a DC inverter that's rated for 3kw sustained with a 6kw peak (for up to 5 seconds). Per the Inverter manual, the manufacturer recommends a battery fuse rated for "at least 350 amps". How can ...
0
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2answers
56 views

powering op amp current

I think this might be a bit of a stupid question, but I've got a bit of mental block on it. I'm trying to power a CA3140 op-amp. I have a 12V source, and an AMD660 inverter to provide the negative ...
0
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1answer
31 views

Why LTspice is showing singular matrix error in the following inverter circuit?

While simulating this circuit I am getting an error of singular matrix. Any advice?
1
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3answers
56 views

Creating a +5V/-4V Clock with a PIC Micro

I'm working on a project to drive a CCD array which needs a particular signal with a high of +5V and a low of -4V, changing fairly rapidly. I'm using a PIC18F4620, which as far as I'm aware, looking ...
1
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1answer
45 views

Will this crystal-driven inverter successfully produce AC current?

The basic idea of this is that the crystal X1 and filtering caps C1 and C2, will produce a simple square wave that feeds into the NPN transistor Q1. When Q1 is on, the input voltage that Q2 and Q4 ...
0
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1answer
50 views

One battery discharges faster than the other in my solar power system

So, I have solar power system and it is as follows: 2 AGM batteries each 100 Ah 2 solar panels 24-Volt , 250 Watts each a controller an inverter the batteries are connected in series to give a ...
1
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1answer
34 views

Negative voltage from positive output DC/DC

my DC/DC ( http://www.ti.com/tool/PMP10077 ) has 200 V output on pins +HV and GND. Can I get negative output by simply swithcing the meaning of output pins -> I will use +HV as GND, and GND as +HV. I ...
0
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1answer
44 views

Starting the VFD from a specified frequency instead of 0 Hz [closed]

I have Hyundai N100 inverter. PLC is sending 0-10V analog signal to the inverter. It starts from 0 Hz and then reaches the maximum frequency of 50 Hz. Now i want it to start from 40 Hz instead of 0 Hz ...
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1answer
41 views

How to reduce VOC of solar panels to match the MPPT of inverter

I will have an off grid solar panel system to run my deep well 5,5 Hp water pump. I already got 24 of 250Wp 36,3 Voc panels and 3 phase Delta VFD C2000 inverter/driver. for this system I need to wire ...
0
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2answers
61 views

Simulation for Wireless Power Transfer works fine, Prototype on breadboard doesn't

I am working on a Solar Powered Wireless Power Transfer project. The simulation for the circuit I am working off of works really well. I have built this design and others on a breadboard but I am ...
0
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2answers
31 views

Why there is continuous variation in output frequency of a Hitachi Inverter (L100 Series)? [closed]

I am using a Hitachi L100 Series inverter and its frequency source is Keypad Potentiometer. During run it is continuously changing the output frequency which is displayed on the Operator Display ...
6
votes
2answers
84 views

What constitutes a “sufficient” ground?

Electricity novice here. Thanks for reading! I have a 3000 watt DC to AC inverter attached to a 12V battery bank. The inverter has "DC ground lug" on the exterior of the inverter's case which the ...
0
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2answers
54 views

PV solar panel inverter

I am designing an inverter for a project. The main focus of the project is to design a standalone inverter that is able to produce variable voltage output. A secondary aim is to have the system solar ...
0
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2answers
63 views

Need help with inverter

I am wondering if it is possible too hook up an oxygen concentrator in my car for longer than normal trips. My gf needs 10 to 15 liters but can maybe get away with 10 (1 machine) for a drive. The ...
0
votes
1answer
72 views

Help comparator circuit for this PWM signal inverter

I have 2 signal (signal on the left) and how to combine those 2 signal into the signal on the right, I have try using lm 741 op amp, but unfortunately the output signal is different from the ...
1
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1answer
34 views

Add line in to electret microphone and mute the microphone when plug is connected

I have a megaphone with an electret microphone. I want to modify the megaphone so that I can optionally conntect a notebook's headphone out to the megaphone. So I want to add a line in connector to ...
0
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1answer
24 views

High voltage in electrical grid and Inverter's voltage output range

I have an 24 V inverter. In the manual i've read that this inverter will bypass the electrical grid voltage in the range 170V-280V. So with other words , when the electrical grid's voltage goes (for ...
2
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2answers
104 views

Synchronizing a diesel generator with a pure sine wave inverter

As the title reads, I'm trying to understand the best (Practical) way to synchronize a diesel generator with a pure sine wave inverter, in order to implement an automatic synchronizer based on ...
0
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1answer
111 views

What is the type of my batteries?

I have an inverter that requires to set the batteries type. The inverter accept 3 kind of batteries : AGM , GEL , FLD. But i can't find any information on my batteries about these types. The only ...
0
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1answer
86 views

Can a piezoelectric inverter for CCFL work for similar sized neon tubes?

I've done some backlight work for instrument displays using CCFLs and designing custom drivers (12 Vdc to ~1000 Vac) so I have some experience with these designs. Recently a friend of mine was ...
1
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1answer
22 views

When using conventional means to control a heating element, how does it affect the peak required VA?

This question is similar to two others, here and here, but with a small difference. To allow a bit of context: Suppose I have a winters day with lots of sunshine. I have an off-grid PV system, and ...
1
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2answers
59 views

Which oscilloscopes can reliably measure losses in an inverter for an AC motor?

For my next project at my workplace I am looking for an oscilloscope which gives me good support in measuring the losses in one of the half-bridge switches over one commutation period. The last time I ...
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2answers
64 views

Live wire in square wave inverter

I have a square wave inverter, as you can see in following pic when i test live wire in square wave inverter, both output wires appeared as live wire but my pure sine UPS have only one live wire, why? ...
1
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0answers
55 views

How to - LiPo Battery supporting many devices?

I have a number of devices that I need to support off of this 11.1v 6400mah LiPo battery: Venom 20C 3S 6400mAh 11.1V LiPo Battery with Universal Plug (EC3/Deans/Traxxas/Tamiya) I'm wanting to ...
1
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2answers
58 views

What does a Schmitt Trigger inverter act as when unpowered?

I assumed that a Schmitt Trigger inverter would act as an open circuit when unpowered, but discovered today that this is not the case. What does a Schmitt Trigger inverter act as when unpowered? I'm ...
0
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1answer
31 views

Direct control over Real and Reactive charge/discharge in a battery/inverter AC system

In a paper (page 31) discussing the installation of a battery(*) in an electricity substation, UK Power discuss the ability to control the real power and reactive power components. They go so far as ...
1
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0answers
33 views

Contact selection for grid-tie inverter disconnect relay

A single contact will be inserted in-line with the Active connection, between a 240V grid-tie inverter and its circuit breaker in the switchboard. Is it correct to assume that the inverter presents ...
0
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1answer
34 views

48VDC to 240VAC daisy chain inverters

Is it possible to daisy chain smaller inverters to achieve a higher overall output power? For instance if I have a 48VDC battery bank and I want to power a large compressor at 240VAC it will need a ...
3
votes
4answers
397 views

Need help on 2N3055 12v DC to 220v AC Inverter Circuit

I am about to build a 12V DC to 220V AC inverter using power transistor 2N3055. I am following this circuit diagram. The transformer is 220V to 12V step down (12-0-12) 4 Amp transformer. And the ...
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1answer
65 views

Modbus and the Sunny Boy

I am using libmodbus to connect to the a SunnyBoy 2.5 inverter. I make the connection as follows: ...
1
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1answer
81 views

Threshold voltage of a pseudo nmos inverter

How can I find the Vm of a pseudo nmos inverter? Since I dont know the Vds of neither of my transistors I cant determine in which region they are. The circuit and some parameters are in that link. ...
0
votes
3answers
141 views

Can I generate pure sine wave with just a clock and amplifier?

I see pure sine wave DC to AC inverters cost a lot more than the modified sine wave ones due to added complexity. Can't we just take a DC source, feed it into a quartz clock to create a sine wave, ...
1
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1answer
71 views

modify 700VA UPS to power 65Watt Laptop Adapter for hours instead of minutes

I have 700VA UPS which I had bought in 2009 to power my Desktop Computer.It can power desktop(17" CRT monitor,CPU cabinet ) for 5-6 minutes.It has 7Ah battery(only 1), charging and inverting circuit ...
1
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0answers
39 views

Negative Charge Pump- How to analyze this?

I am using CMOS 4069 inverter and wired up this circuit. I want to generate a \$-V_{dd}\$ negative pulse and \$2V_{dd}\$ positive pulse. The circuit above is for the negative voltage. However, I get ...
0
votes
1answer
39 views

CCFL'S wiring in a series

I’m hoping someone here can help me with a long overdue project. I’m trying to figure out how to wire multiple CCFLS to one power source + inverter... so far not much success on my own. I’m currently ...
0
votes
2answers
47 views

Can we use a power amplifier (Class AB) in the inverter portion of a VFD?

I would like to float this idea of using a good (audio) power amplifier in the inverter stage of a sub 1KW VFD. How does this idea sound ? On the plus side, there is far less switching noise, since ...
0
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1answer
39 views

Trouble Understanding Shunt active power filter using instantaneous power theory

I have a demo Simulink model of a shunt active power filter using instantaneous power theory (Source, unbalanced none linear load and the filter, a very sample one, that i am using to understand the ...
0
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1answer
41 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 ...
-1
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1answer
94 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 ...
0
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0answers
54 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
687 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 ...
0
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0answers
43 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 ...
0
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1answer
89 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 ...
1
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2answers
89 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 ...