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

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15 views

charging an AGM battery in quick time

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
54 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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1answer
26 views

Auto fallback power source when one source going down [on hold]

I have a wireless router with simple NAS function, powered by a 5V wall adaptor. It's running 24x7 (nonstop). Unfortunately, the power source in my home is not always available. At least one hour per ...
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2answers
75 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
24 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
48 views

Connecting a 20 amps battery charger to an 18 amps source

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
128 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 ...
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1answer
51 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
115 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
65 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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22 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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41 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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25 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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53 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
45 views

Power a laptop LCD inverter

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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23 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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49 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 ...
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1answer
113 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
58 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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1answer
48 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
102 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
221 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 ...
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1answer
88 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
48 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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48 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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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
137 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 ...
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1answer
87 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
33 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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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
167 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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50 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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69 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 ...
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67 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
109 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
100 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
53 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
76 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
106 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 ...
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1answer
126 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 ...
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1answer
146 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 ...
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86 views

simple inverter simulation in simulink

I am facing a weird problem simulating a rather simple inverter circuit in simulink. The schematic I'm working on is shown below. The oscillograms refer to PWM (a,b,c,d) and output which is 0! ...
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1answer
59 views

VFD and Car Batteries

Can I use a VFD to drive a 3 phase motor if I drive the VFD with 48V from some series car batteries? The VFD has a single phase input and 3 phase output. Is it just a rectifier in there that charges ...
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2answers
429 views

Why do we rectify then invert current in induction heaters?

I was trying to build a simple zone refining prototype, so I thought of How to simplifying induction heater for zone refining? I throughly read What does a beginner need to know to build an inductive ...
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2answers
104 views

Connecting the protective ground of a 3 phase AC motor

I am wondering how can I connect the protective earth of my 3 phase AC motor? Here is the background of how my connections are: I am using 3 phase with a neutral point from the mains which goes to ...
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1answer
229 views

NOT gate with an NPN (2N3904) transistor not working?

I have the book Getting Started In Electronics, by Forrest M. Mims III, and it has an RTL NOT gate schematic that looks pretty much the same as this: About a month or two ago, I was starting to get ...
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3answers
129 views

How can I parallel a battery supply and AC supply?

How can I proceed if my battery does not supply all the charge I need and want to compensate by supplying the rest with an AC source connected in parallel with the battery?
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3answers
153 views

Converting battery voltage 12 volts to -5,5 volts at about 3 mA

My team and I are trying to power a sensor. We need to get -5.5 volts and were not too familiar with making or acquiring negative voltages. So it doesn't have to be a 12 volt. Ultimately we'd like ...
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1answer
548 views

What's the difference between a 74LS05 hex inverter and a 74LS04 hex inverter?

It looks like the 74LS05 has "open collector outputs" (not sure what that is) and the 04 does not. Plus, it appears the ...