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

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50 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
38 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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1answer
123 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
36 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
83 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
103 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
80 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
31 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
51 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
49 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
68 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
49 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
35 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: ...
1
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2answers
97 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
42 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
60 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
56 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
198 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
73 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
317 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 ...
0
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0answers
53 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
99 views

Switched capacitor inverter

I am trying to produce negative voltage with this circuit: The circuit with PMOS: when the parameters are: ...
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1answer
111 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
36 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 ...
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1answer
138 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 ...
5
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1answer
208 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
46 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
84 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
69 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?
0
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2answers
107 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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1answer
131 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
votes
3answers
90 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
83 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
47 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
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1answer
122 views

Making a three phase voltage source to drive a gyroscope

I'm trying to drive a gyroscope that needs a 3 phase 400Hz 32v 1A power supply. How can I provide that supply? It's one part of my university project and I'm a beginner in this field. I'd like to find ...
4
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2answers
243 views

Implementing a sine wave inverter with an oscillation circuit

I was thinking today about a whether it would be feasible to implement an inverter using a simple sine wave oscillator (perhaps op amp based or a Wien bridge implementation), a power amplifier stage ...
1
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1answer
374 views

LC Low Pass Output Filters on Inverters

I've seen various schematics which feature a low-pass LC filter at the output of a inverter intended for a UPS or a Class D Amplifier. With a Class D Amplifier the load is somewhat predictable (i.e. ...
0
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2answers
101 views

3-phase Inverter in single phase operation

I'm working on a standard (AFAIK) 3-phase, 6-pulse inverter. I'm testing it under single-phase conditions to see what the de-rating will be. My understanding: With everything else staying the ...
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1answer
61 views

Can we say that the circuit is a circuit of Nand element

Can we say that this circuit is nand element ?
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1answer
594 views

50/60Hz inverter output inductor design

Given a SMPS PWM inverter (for example an UPS) supplying voltage/current at 50/60Hz, how do you design an output inductor? I don't mean how you compute its value in uH/mH nor its current rating in A. ...
1
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1answer
91 views

Sony Vaio Inverter [closed]

My sony vaio vpcee3j1e laptop backlight doesn't work.Because the inverter is not working anymore. Since I have some urgent code to write, I need to fix it.I do not have any tools to make measures so i ...
0
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2answers
171 views

Why my single-phase induction motor's velocity decreases after 100Hz?

I have made a single-phase inverter with control V/F using Freescale S08P and IRAMS. However when the frequency of 100hz passes the motor decreases the velocity. Some problem with my system or V/F is ...
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0answers
78 views

Solderless MOSFET bridge connection. I can't find breakout connector for MOSFETs

I need a way to separately bridge 2 rows of 6 MOSFETS together for high current application. I'm building a power inverter and the board I'm using at the moment isn't rated for this high of current. ...
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1answer
109 views

Single Phase Sine Inverter

Can somebody tell my why that gain and integrator (and negative feedback gain) circuit is used to measure the current? This is the basic H bridge circuit, mosfet is used as switch here, and gate ...
0
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0answers
171 views

Single phase pure sine wave inverter Proteus Model error

I am designing pure sine wave inverter in Proteus. I am getting error as no model is specified for comparator OpAmps LM139/LM239/LM339/LM2901/LM3302 None of the above mentioned comparator are ...
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1answer
102 views

CMOS inverter : Calculation of Vd

simulate this circuit – Schematic created using CircuitLab Consider the CMOS circuit shown, where the gate voltage Vg of the N-MOSFET is increased from zero while the gate voltage of ...
6
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2answers
262 views

How does an increase in operating frequency result in decrease in the size of an inverter circuit?

I was reading about inverters in a textbook where the author says that The size and cost of the circuit can be reduced to some extent if the operating frequency is increased but then inverter ...
2
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1answer
344 views

Oscillator for High Voltage Transformer: RLC or Blocking Oscillator

What type of oscillator is being used in the schematic? How is that particular oscillator working in this circuit? I'm less than confident with oscillator theory, and I can't tell if this is RLC or ...