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

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41 views

Why Inverter with feedback oscillates ? [duplicate]

Phase difference between input and output for this circuit is 180 degree. That means Barkhausen criteria is not satisfied,still circuit generates a oscillating signal. Why ?
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2answers
78 views

Building “AND” and “OR” gates from tri-state drivers & inverters [Answered]

I'm working on a digital circuits assignment which asks me to prove that if you have tri-state buffers and inverters, you can build any combinational logic circuit. My attempt at doing so would be ...
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6answers
88 views

Converting PWM to bidirectional square wave?

Is it possible to make bi-directional ( symmetrical) square waveform from PWM signal? Im talking about 40 kHz frequency and 0.5v /-0.5v peak to peak signal.
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2answers
50 views

Question about CMOS Inverter Oscillator

Using CMOS inverter with crystal and cpacitors, we can make a oscillator. And i find many docs mention the method 'negative resistance'. But, they are not all the same. The method from TI's doc: Use ...
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1answer
29 views

Does the DC portion of an inverter experience the Apparent Power consumption of the AC part?

If the AC portion has no load, then the DC portion sees it as an inductive load I assume. So does power factor come into play when calculating the DC wattage consumed? Let's say AC is 100V 0.1Amps no ...
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5answers
107 views

CMOS inverter with feedback

In some circuits such as crystal oscillators, there is a CMOS inverter with a feedback resistor, they all simply say the resistor bias the 'amplifier' and force it to operate in the linear region, ...
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2answers
53 views

Solar inverter with mains backup

I'm looking for a way to partially power an applicance (a fridge freezer for argument's sake) using solar/renewable energy. I don't expect the couple of hundred watts of solar power to be sufficient ...
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0answers
40 views

Preference of MOS resistor as load in MOS inverter [closed]

Whys is a MOS resistor preferred over diffused resistor as load in design of a MOS inverter?
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3answers
78 views

How to reduce maximum power rating of dishwasher for use with photovoltaics inverter? [closed]

I have a photovoltaic power system and an inverter with an overall power rating of 1500 Watts. I want to connect a dishwasher which consumes 2200 Watts when heating the water. Question: What is the ...
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2answers
120 views

Could a modified sine wave inverter destroy/damage the AC adapter for a laptop?

I recently encountered a scenario where I attempted to use a Energizer EN500 modified sine wave inverter to provide power to a Dell 180 watt AC adapter. The circuit powering the inverter was 12 volt, ...
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1answer
52 views

Will this H-Bridge and it's driver work?

I am creating a half bridge, I though about it a bit and came up with this idea First for the controlling side we have a typical 555 timer wired up like this (But the resistors are variable ...
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2answers
74 views

Solar panel system with as minimal reliance on the grid

I am not sure if this is the best place to ask, but I am trying to make a solar panel system which will charge batteries with excess energy and will be connected to the mains (i am going to try the ...
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1answer
41 views

Synchronous rectification in IGBT

simulate this circuit – Schematic created using CircuitLab In above standard 3-ph IGBT based inverter circuit suppose Diode D4 is carrying current because of inductive nature of load. If ...
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1answer
39 views

EL wire inverter to molex inside computer [closed]

I am trying to rig some EL tape into my computer, but I am unsure where to go at this point. So far, I know that I'm buying this inverter ...
0
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0answers
128 views

2n3055 replacement with MOSFETs

I have searched a simple circuit diagram for a 12v to 220v voltage inverter. The circuit has two 2n3055 transistors and I presume it is used for switching. Can I replace them with IRFP250 MOSFETs ...
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0answers
55 views

Voltage transfer characteristics of a C-mos inverter

How to determine the voltage transfer characteristics of a c-mos inverter during the region when both the p-mos and the n-mos transistors are in the saturation region.I know that both the transistors ...
2
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2answers
422 views

Challenges to design high-density power inverter

Google has announced a contest to design a kW-scale (>2 kVA loads) power inverter with 90% size reduction compared to present designs. The goal is running household appliances from a small inverter, ...
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1answer
76 views

Replacing a transistor in a CCFL inverter circuit

I have a DC-to-AC inverter circuit that isn't working. It takes 12V DC input and is being used to power a CCFL. The circuit looks remarkably similar to the one labelled "Conventional CCFL inverter" on ...
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1answer
94 views

How does a true sinewave inverter work?

I am an Electrical Engineering student, and when we were taught about inverters (at a power electronics course) we studied inverters using Sinusoidal Pulse Width Modulation. My question is do the ...
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2answers
127 views

EL Wire vs EL Panel, difference in voltage and frequency needed?

I am currently researching Electroluminescent Inverters/Drivers for a project. There is many accounts that EL Wire needs a higher voltage and frequency than an EL panel or tape needs. (300vpp vs ...
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1answer
122 views

Protecting a wireless router from voltage fluctuation

Background: I have a wireless router ASUS DSL_N12U. Input voltage and current is 12V , 1.5A respectively. I also have an Inverter (works on three modes: Solar, Battery, Mains) at my home. Problem: ...
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0answers
41 views

Grid-connected bidirectional inverter?

I'm looking for an inverter where I can set its DC link voltage to the typical 400-700V range and then hope to connect a few bidirectional DC/DC converters connected to batteries. So the inverter just ...
1
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0answers
52 views

Electromagnetic interference in a Car

I am currently working with a 12 volt inverter to power EL tape. The tape is wired in various places in my vehicle, I have tested it in my car and I hear a high pitched noise on my radio when I try to ...
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2answers
97 views

MC34063 dc-dc inverting - capacitor question

For a project I try to build a dual supply for opamps in a device. I bought the MC34063 to invert the DC. The device should be portable, however, the standard schematic in the datasheet uses some very ...
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1answer
82 views

Can I make my PS2 kind of portable by using a pure sinewave inverter with no battery and [closed]

I have this pure sinewave inverter And I wonder if I buy this I can make my PS2 portable without using the battery for the pure sinewave inverter (sold separately) because I don't want to worry ...
0
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1answer
57 views

Connecting solar panel and batteries of different voltages in series

Will this work? What I want to do is connect a 12v alternator to a battery to charge it which would then be wired in series with a 24v solar panel, but hopefully isolating the voltage. Will this work? ...
13
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7answers
1k views

Why are rectifiers-inverters used to drive AC motors instead of using the rectified current to drive DC motors?

I understand the advantages of using a rectifier-inverter system to drive an AC motor instead of simply plugging it into mains power, as it allows much better control of its speed and performance; but ...
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1answer
40 views

Inverter not showing the right output in HSPICE

This is the code snippet apart from the usual headers in the rest of the file: ...
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2answers
123 views

Why does my Inductor Get Warm? (Inverter Output Filter)

I have a H-Bridge based Inverter that modulates a 350VDC source into 220V RMS @ 50 Hz. Right now I'm working at just 70VDC but my output inductor is getting quite warm. Here is a schematic: The ...
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0answers
48 views

Low voltage inverter for low voltage AC

What would be the proper method of making a low (4.2) voltage inverter to get something like a 4.2V AC current?
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3answers
76 views

Inverter Voltage Control - Stability Concerns

I have a voltage inverter that converts a 400VDC source into sine wave of 240VAC @ 50Hz. The inverter is based on a H-Bridge. The inverter works well but I'm struggling in understand how to control ...
0
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2answers
90 views

Ring oscillator frequency

According to Barkhausen's criteria, for oscillation the feedback should be made after phase difference of 2pi and gain has to be >=1. Now when I consider a ring oscillator if 2 inverters are ...
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2answers
674 views

Converting Inverter Output from Square Wave to Sin Wave

I bought a UPS, it has output of 220v AC, the problem is the output is square-wave, which causes distortion on TV/LCD, is there circuit that can take this Square-Wave as input, and output Sin-Wave? ...
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0answers
107 views

Removing DC bias current from PWM driven transformer

Previously I asked this question about circuit topologies for driving a transformer by a PWM signal. From the answers and comments under that question, I understood that the DC bias current is ...
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2answers
431 views

How do I apply PWM signal to the primary side of a transformer to get synthesized sine wave at the secondary side?

I'm trying to obtain a sinusoidal signal (\$f_{sin}=50Hz\$) by using a ferrite transformer. I am going to apply a PWM signal at the primary side (\$100kHz\le f_{PWM}\le300kHz\$). I'm going to use one ...
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0answers
70 views

Changing synchronous rectifier's output voltage by varying phase

I'm going to design a voltage converter with regulated three-phase 220V 50Hz output. It will consist of mains rectifier, filter (with 310V DC output), a self-oscillating high-frequency inverter, a ...
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1answer
105 views

Switched capacitor inverter

I am trying to produce negative voltage with this circuit: The circuit with PMOS: when the parameters are: ...
1
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1answer
115 views

Is this DSP sinewave inverter a marketing hype?

There are some companies in my country(India) which try to sell inverters for home marketing in the name of DSP Sinewave Inverter and claim are superior to normal sinewave inverters. I am trying to ...
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0answers
46 views

Switching cold cathode fluorescent lights on and off without relay?

I have a few sets of 2-in-1 CCFLs that are designed to be powered off the 12V rail of a computer PSU. I'm planning to build a large 7-seg display using them so I'd like to be able to switch them on ...
1
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1answer
217 views

Aluminum winding in inverters

I am planning to buy inverter. I finalized one model; however, I was told that it uses aluminum windings whereas the other model has copper windings. They recomended I should buy the one with copper ...
21
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6answers
3k views

Why have two NOT gates in series?

I have recently been looking at the datasheets for the 74HC139 IC in order to see if it was suitable for my project, and have come across the following logic diagram which strikes me as a little bit ...
6
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1answer
223 views

Why two inverters cascaded in multiplexer control signal terminals?

Why cascaded inverters are used in the multiplexer when it is possible to realize the circuit using a single inverter.
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0answers
51 views

Testing FPGA-based SPWM

Sinusoidal Pulse Width Modulation (SPWM) was written using verilog in FPGA and it was simulated in ModelSim. The next task is to test it in actual hardware setup. The pulse of FPGA is 3.3V and we ...
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1answer
142 views

24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device,

I am having four 24V 250W solar Panels can I use them with my existing 12V Battery and Inverter with the help of a (24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device 30A) instead ...
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1answer
77 views

Will a Transformer work from a DC inverter's output? [closed]

If so, is it ever more efficient to use an inverter into a transformer to dial down DC Voltage?
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2answers
170 views

12V 120V inverter and battery for off grid oxygen

I have an oxygen concentrator that is 120V. The data plate says 3.0 amps and the specs say 280 watts. My question is this. I want to use it in an RV off the grid but without running my generator all ...
0
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2answers
171 views

Pseudo-Nmos inverter in LTSPICE

In LTSPICE, I've built a pseudo-NMOS inverter and I've got 2 tasks to do using it. 1) I've a initial guess for Wn value of NMOS. I start the simulation with this value however, I need to optimize it ...
2
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3answers
113 views

Switch poles from inverted power to make negative positive?

My understanding is that voltage is relative (where you measure affects voltage) and that current flows with voltage difference. Why can't you just switch the poles/wires of an inverted signal/power ...
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2answers
90 views

how can i drive a motor with an inverter providing it's power supply? [duplicate]

I'm trying to drive a gyroscope that needs a 3 phase 400Hz 32v 0.7A power supply. i'm going to use an inverter to provide my supply(1phase to 3phase AC: LS-IG5A-0.75kw). i have 2question about it: ...
0
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1answer
49 views

Need to know battery configuration for a 250 watts inverter [closed]

I have a 12 Volt inverter which have ability to produce 250 W output. I would like to purchase a battery for this. can any one tell me the configuration of battery ? eg: Minimum AH