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

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28 views

Plugging battery backup and AC/DC converter into the same battery

Today, I took one of the UPS (UPS A) the battery out and directly plugged it to bigger 12V battery (so if the electricity is out it stays long). And I also have AC/DC 2000Watt inverter. That inverter ...
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2answers
31 views

Inverting charge pump with boost converter loading characteristics

I've added a test inverting charge pump to an LMR64010 based boost regulator. This regulator outputs +12V (exact value is 11.88V) from a 7.4V battery pack. This is a notated image from a Maxim ...
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0answers
40 views

cmos inverter in voltage regulation

How does a CMOS Inverter drives the gate of MOSFET for voltage regulation? I have attached the image for clarification. I just want someone to explain me why two cmos inverters are connected to the ...
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1answer
43 views

Requirements to power 3.5kVa inverter?

How many 200 Watt solar panels do I need to power a 3.5kVa 48DCV inverter for 24 hours if the load on it is 1500 Watts and the batteries are 200Ah, 12DCV each in a country with about 6hrs of sunlight? ...
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0answers
12 views

Will grid tie inverter and powerline communications affect each other

Since grid tie inverters "conform" their power to match the frequencies of a home, would powerline computer communications such as this router be affected by or affect a grid tie inverter?
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3answers
33 views

MOSFET chip for discrete CMOS inverter

My plan is to build a discrete CMOS inverter(just out of curiosity) out of two complementary MOSFETS. Hence, I am currently looking for a nice pair of complementary MOSFETS, which is quite hard, ...
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2answers
60 views

Minimum current to measure from a 30kW motor?

We've been troubleshooting a problem here at work and we're kinda stuck so I thought about asking for some opinion from you guys. We have a 30kW 240V 3-phase motor with a rated current of 109A that is ...
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1answer
56 views

Why would someone use an amplitude modulation ratio lower than one in a power inverter?

We had a test the other day, and there was this question: What is the minimum DC voltage required to drive a PWM, half-bridge, three-phase, power inverter to 4160Vrms. It should be possible to vary ...
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2answers
166 views

Simple Oscillator Designs

I want to be able to create simple oscillator circuits for clocking in digital circuits and am wondering what is the most simple design people know of? I could use a simple ring oscillator which is ...
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1answer
58 views

falling delay inverters VLSI CMOS

How do I obtain the falling delay driving by signal A: Data: ...
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0answers
36 views

4-lamp-inverter with LCDs designed for 1 or 2 lamps

can i use a 4-lamp-inverter with LCDs designed for 1 or 2 lamps? The unused lamp connectors could be closed with resistors as suggested here. Or, is it safer to use an 1-lamp-inverter with an LCD ...
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2answers
72 views

Inverter constructed using LDMOS transistors

I have the following question: is it possible to construct an inverter using LDMOS transistors when HV power supply is equal to 30 V and maximum VGS for LDMOS transistors is 5 V? Moreover, lower MV ...
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1answer
49 views

I am looking to isolate an inverter when power from a generator is applied- debounce relay?

I have tried to find specific info on this scenario with no luck The situation is this; Off grid power system 12v battery store runs 12v lights etc. and an inverter for things difficult to run or ...
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2answers
67 views

Graphical solution of BJT inverter

I have the following BJT inverter circuit and graphs of its electrical characteristics. I need to graphically find the DC response characteristics of this inverter but I don't know how to proceed.
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2answers
180 views

How can I generate a sinusoidal voltage and current waveform using half-bridge or full bridge inverter?

I know how a half bridge and full bridge circuit looks like. What I don't understand (and I simulated it) is that whenever I drive the switches using a pulse generator I get a square wave as an ...
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2answers
90 views

How does one implement the following function with these tools provided?

Suppose I have a function defined as follows, such that it is expressed in POS form, with the product of the following max terms of 4 variables (A,B,C,D): 0,3,4,7,9,10,12,15 and I only have a 4 to 1 ...
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0answers
43 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
137 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
113 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
72 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
58 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
443 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
90 views

Solar inverter with mains backup [closed]

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
51 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
89 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
692 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
63 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
82 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
75 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
74 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 ...
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0answers
282 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
89 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
569 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
119 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
109 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 ...
2
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2answers
163 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 ...
0
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1answer
190 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
56 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 ...
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0answers
53 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
165 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
100 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
67 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
2k 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
47 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
160 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
107 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 ...
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2answers
155 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
1k 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
140 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 ...