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

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1answer
55 views

3 phase AC motor 220V powered from 12V battery

I need occasionally drive watergate with gear box (e.g. http://www.servomech.com/main/screw-jacks.htm). Because location is far away from 220V I suppose powering from SLA 12V battery charged from ...
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1answer
49 views

MOSFET Gate-Source protection question

I have seen different schemes in the three phase motor inverter design when people try to protect gate-source from high voltage as shown in the picture. I understand the usage of zener diode to ...
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1answer
40 views

Using Electric Motor/Generator Instead of Inverter to Deliver AC Mains from Batteries / Solar

I am exploring/researching Solar PV systems and the possibility of setting up a solar installation company. DC/AC inverters are very expensive and I am trying to find a cheaper solution. Question: ...
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2answers
243 views

Does a 24V inverter consume the same amount of wattage as a 12V inverter?

Let me clarify. I know how series and parallel setups work. I know that in series the voltage adds but the current stays the same. In parallel current adds but voltage doesn't. But that doesn't ...
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1answer
39 views

How does this soft charge circuit work?

This circuit is a DC bus capacitor soft charge from a 3phase inverter. I've seen a lot of similar products but this one is a little strange and I'm curious how it works. I want to know why the ...
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2answers
87 views

Need help with the BLDC drive inverter circuit problem

I am building a BLDC drive circuit for a 24V/60W BLDC motor. I chose SI4564DY(P+N) and FAN3278 to realize it as shown below (I only include A+ and A-, B and C are exactly the same). The FB indicated ...
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3answers
78 views

How to convert 220V AC @50 Hz to 400V @ 20KHz?

Sorry, I may be asking simple question but I'm not specialized in electronics. What I want to do is to increase the voltage from 220V AC to 400V AC. Also I want to increase the frequency from 50Hz ...
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0answers
42 views

How to calculate run time of inverter

I have a 24volt inverter (2kva). There are two 12V, 200AH AGM (C20 at 27 degree c)batteries connected in series to the inverter input. Now, if I have a constant load of 2.5 amperes at 120V, how do I ...
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1answer
49 views

DC--> AC Inverter Connected to a single battery in a 6 battery series

I have 6 x 8V batteries connected in series (i.e.48V) and have a 48V smart charger attached which charges them from regular electricity main supply. What happens if I connect, say, a 24V DC to AC ...
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2answers
66 views

How to charge an AGM battery fast?

I have a 12V, 200AH AGM battery. The maximum charging current recommended by the manufacturer is 50 amps. Now, I need to connect two AGM 12v batteries in series to connect to the input of my 24 volt ...
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0answers
68 views

Which are the reasons to burn/bust 555 timer IC ? How to prevent?

I am using NE555 in inverter circuit & VCC voltage is regulated 16VDC from LM317. But issue is that NE555 IC bust after 3-4 month on site. I try to simulate same condition in my lab but couldn't ...
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2answers
82 views

Calculating the discharge of Ultra Capacitors

Say I have two 500F ultra capacitors, connected in parallel, charged at 15V. These are the capacitors BMOD0500 P016 B01. Then say I connect the capacitors (via an inverter) to a 230V light bulb that ...
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1answer
31 views

Number of cycles for AGM battery with an inverter

I have an AC system which has a continuous load of 7 amps at 120 volts. To run this system, I need a set of AGM battery and an Inverter system (power factor- 0.8). The inverter is 24 volts and rated ...
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2answers
53 views

Connecting a 20 amps battery charger to an 18 amps source [closed]

I have an inverter with a 20 amps DC battery charger (AC to DC ). I need to a connect the ac Generator output to the ac input of the inverter. The thing is that the generator can provide a maximum ...
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2answers
135 views

Noise resistant microcontroller used in high power inverters for PWM generating [closed]

In order to generate PWM pulses for driving switches of a high power(80 kW) three-phase inverter,which microcontroller family(and which member) is suitable? ,taking into account the noise effects on ...
0
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1answer
59 views

Reduce RF noise from a DC inverter

I have got this strip of EL light. I am using it in a project where I am also using 2.4g and 5.8g band of RF. The DC inverter creates a lot of RF noise (understandably) as it's inverting from DC 12v. ...
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1answer
120 views

Transistor inversions

Having some trouble with transistor logic. I have an existing circuit with a 3.3V rail and signal rail that is pulled to 0V when asserted, i.e. active low. I ultimately need to control four 12V LED ...
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1answer
72 views

Antistatic wrist strap without earth - ESD protection when using an inverter

I would like to be able to work off the grid on electronic circuits and I have at my disposal a large 12V battery and inverter (used for lighting in the remote location) which give me the problem of ...
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0answers
28 views

Cannot find datasheet on LCD inverter

I recently took apart a HP Pavillion dv7-1170us, and inside, I found an LCD CCFL inverter: PWB-IV11150T/L5-E-LF After doing a search, all I could find were people selling the part, but with no ...
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2answers
56 views

Would splicing existing wires (from charge controller to battery) to connect an inverter work, and is it safe?

I'm trying to add an inverter in my travel trailer, but wanted to figure out the best way to do it. Because I'm not that familiar with the electrical setup of the trailer, I was only able to access ...
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0answers
36 views

Control of a single-phase PWM inverter

When designing a controller for the canonical DC-DC converter, I found a good number of models (linearized transfer functions) that could be used to design a compensator. I am attempting to do the ...
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0answers
60 views

12 Volt from solar panel converted to 120VAC without battery.

I have solar panels that will supply about 200 Watt (They are rated for 400 Watt). I have a load that needs about 150 Watt, 120 Volt AC, off grid, and only when the sun shines. The 12 Volt solar ...
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1answer
60 views

Power a laptop LCD inverter [closed]

I disassembled a very old Compaq laptop (about year 1990 1998). I took the LCD monitor and I would like to power the backlight on through the original inverter. You can find some photos of the ...
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0answers
24 views

How to filter the stepped wave from inverter?

I have a 1KVA inverter/ups setup at my home, did the installation very recently. Everything works perfectly CFLs,Ceiling fans and stuff. It has stepped sine wave output (when on battery) at a max ...
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0answers
57 views

How to discharge a capacitor quickly…(filter of an H-bridge/inverter)

I have used four IGBTs to build an H-bridge… the inputs of the h-bridge are SPWM and are programmed in a way as shown below: The output of the H-bridge is a three level pwm(as expected), and then its ...
2
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1answer
138 views

What are the effects of powering AC devices from a square wave?

I've been playing around with some ideas about building my own inverting power supply, to power AC devices from a car battery. I've heard of designs that just feed a square wave into a transformer to ...
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1answer
67 views

Easiest way to connect two pins when an output is off?

I'm planning to build a switch that turns off the power supply to my Raspberry Pi when an integrated circuit (ATtiny 85) output pin is low. The power supply (Adafruit PowerBoost 1000C) goes off when ...
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4answers
79 views

Significance of -1 slope in CMOS inverter transfer characteristics

In the CMOS inverter transfer characteristics what is the significance of slope of \$-1\$ at the points where \$V_{IH}\$ and \$V_{IL}\$ have been shown? And how is this the occurrence of the values, ...
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4answers
118 views

Inverter using Alternator

Is it possible to generate AC power by powering an alternator using a DC motor? If you think about it is much easier and better sine wave than a circuit? Why isn't it used then? What are the ...
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2answers
227 views

Transistor Voltage Inverter

I am a newbie and was hoping someone could assist me. Given the following schematic which takes a voltage of 12v and considers it off and a voltage of 2 volts and considers it on can someone tell me ...
2
votes
1answer
100 views

Questions on this high frequency sawtooth generator

So I found this very basic sawtooth generator: http://www.radiolocman.com/shem/schematics.html?di=143990 I have a few questions about it: I understand that when the capacitor C_T charges fully to ...
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1answer
60 views

Simultaneous operation of inverter and diesel generator in a solar system

I have a problem at one of my on-grid solar system project. There is a problem which lets the solar inverter on, when the grid is off and the diesel generator is on. As you know that, the solar ...
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0answers
52 views

Trilevel PWM for H-Bridge, potential shortcircuiting in inverter

Here is the schematic I have followed, mine is not exactly the same, but for the most part, it follows the same method, generating a sine and triangle reference, generating a square wave and then ...
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0answers
15 views

full inverter circuit with a buzzer circuit [duplicate]

I analysis the Lm324 circuit and i understand how it work without the C9 and C11 , but I want to know what the function of these tow capacitors.
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2answers
165 views

dc to ac inverter circuit

I want to design the following inverter circuit, I know the general working of it, but I need some details. in the gates of the FET transistors used in H Bridge there is a design contain 4 diodes 2 ...
3
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1answer
92 views

What does “mod 2” mean in these multi-level inverter switching equations?

I am working through a paper that discusses the design of a multi-level inverter to connect photovoltaic arrays to the grid. It uses 4 PV modules (only two are shown in the design image below, but it ...
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0answers
35 views

What topologies are used for synchronization of AC power in a micro inverter?

I would like to know the design pattern utilized in syncing the AC Sine output of a micro-inverter (or inverter in general) with the grid. Please also give any good resources for designing an ...
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0answers
36 views

current feedback design

How do I select the current sensing resistor \$R_{56}\$ with following details: Feedback threshold voltage is 0.5V. DC input voltage 400V. AC output voltage 230V. output power is 500W. operating ...
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1answer
203 views

Can a voltage regulator or stabilizer increase voltage and current simultaneously when used with a generator?

I have just built a generator with a stepper motor I found in a photocopier/printer (24VDC, 0.7A) and a transformer. Without load, the voltage is around 406 VAC. With a bulb (230 VAC, 18 W), the ...
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0answers
58 views

DC to AC inverter efficiency

What is the current best efficiency in DC to AC invertion, in the tens of kW region? I'm thinking mainly of battery to AC, which is a fairly stable voltage input.
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0answers
79 views

Pinout/Datasheet of Delta DAC-08N001 backlight inverter

I'm repurposing a old notebook display for another project but I can't find the datasheet for the backlight inverter. It's labeled Delta DAC-08N001 and has a 5-Pin input connector (as opposed to the ...
2
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0answers
69 views

Why do adapters fail when run on inverters? [closed]

It may be specific to my scenario, but I have brought more than a dozen adapters of varying voltages from different companies and all of them fail when powered through an inverter, after power is shut ...
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1answer
29 views

In an inverter with RL load, how does an increase in output inductance result in decrease in the magnitude of the current?

In a full bridge inverter with RL load, how does an increase in output inductance result in decrease in the magnitude of the current?
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2answers
143 views

How can I supplement a portable generator during peak load.

I'm contemplating purchasing a 2000W generator, to power some of my tools. One potential issue i that I have a saw that pulls 2500 W at startup and then 1800 w to run. Seems to my that as the ...
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1answer
105 views

Why two resistors at Gate side of IGBT

Why two resistors(R5 and R9) are required at the gate side of IGBT Q3? According to me they are used as potential divider, but can any one tell why it is needed over there? In datasheet it is clear ...
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0answers
59 views

PI-filter for inverter

I am to design an input filter for a inverter for a PMSM, and have som question of how to dimension this. We will use PWM for commutation of the motor, probably with a frequency of 20kHz. The peak ...
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2answers
83 views

Mixing two or more AC sources to handle overload

Can I mix two or more AC sources to handle overload and maintain a stable voltage of 230V AC? For example if power from solar panel cannot handle a heavy load can I mix power from different source ...
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1answer
127 views

CMOS inverter delay

Please tell me whether my thoughts on the question below is correct or not. How does the delay of a CMOS inverter decrease when we increase the supply voltage? What I thought was if ...
0
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1answer
138 views

How do I convert 50Hz AC to 60Hz AC using a cyclo-converter?

I want to design a 3 phase cyclo-converter to run a 7.5kW induction motor. The input to the cyclo-converter is 50Hz AC and the output of the cyclo-converter should be 60Hz AC. What are the specific ...
0
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1answer
155 views

Full-Bridge Inverter

I'm building a Full-bridge inverter with input of up to 36V, Four IGBT are used for switching and embed micro controller for PWM. To drive IGBT I'm using four HCPL-3120 chips. After testing the ...