Inverters?

Can someone please try to explain how I can re wire a microwave transformer (or any other Transformer) to be used in a custom inverter. The input is 12 volts and the output needs to be 120 volts. Pictures would be great, thanks in advance.

Question by arenavles   |  last reply


inverter

I am making an inverter whivh converts 12 V dc to 230 V ac i am using 2 33 ohm resistor of 1 watt to connect the load on transformer whenever i switch on the ckt the 1 watt resistor are heating to much and multimeter does not show any voltage i am using 12 Volt dc 2.5AH battery as power supply what is the problem

Topic by AbhishekR2   |  last reply


Broken Power Inverter Answered

I have a sima 140 Watt power inverter, and it doesn't work anymore! I don't know why... I don't have much experience with inverters. Can someone help?

Question by martzsam   |  last reply


power inverter: help? Answered

I have this power inrter, and i once hooked it up t a mac power supply converted to a benchtop power supply. i didn't know i yet, but the power supply was surging, and it started making he inverter smoke. i turned it off, but the inerter never worked again. can i reuse any of these parts to make a new one? i dont think it was the actual inverter piece, but one of the others p.s. this inverter was from a hp scanjet scanner

Question by zack247   |  last reply


Inverter question? Answered

I have recently made a pond in my garden and to avoid spending lots of money in electricity, I decided that I would power it with a solar panel. My pump is 220v 34w, so I thought that a 40 or 50w solar panel should work. However, i can't find any 40-50w inverter, only about 150w. So, my question is, will a 150w inverter draw 150w from the solar panel if powering only the 34w pump? In other words, will a 40-50w solar panel be able to power a 34w pump via a 150w inverter or would I need a 150W solar panel for that?

Question by tgferreira184   |  last reply


inverter rating

Somewhat confused... I'm planning some guerilla projections with a 4500lumen projector (which has a power rating of 450w) can I run it with a 700w inverter? Instructable on these pages says I need 2000w+ inverter can anyone explain why I need so much headroom.

Topic by helterskelter   |  last reply


DC supply for inverter

Hello. I need to figure out the component values for a "simple" high current power supply... and whether the component costs would even be feasible. I plan on buying a 3Kw output 12 DC inverter for use in Spain. I have several US devices that I don't want to run off a step-down transformer as running them at 50Hz instead of 60Hz will cause heating and eventual failure (I experimented with my Technics power amp, it got very hot and started to smell, then the output went way down... it's now on the "one of these days I'll open this up and take a look" pile). So, what I need to design is a 220 to 12 volt/300 amp unregulated supply. Ideas, anyone?

Topic by tsmyles   |  last reply


5000 watts power inverter

5000 watts power inverter with the circuit diagram using SG3524

Question by santos4eva   |  last reply


Is it possible to run a power inverter in reverse? Answered

I'm curious as to whether supplying power to the ac out side would result in the dc in side putting out power or the board burning out.

Question by acetyleneblues   |  last reply


connect power inverter to car battery?

How do i properly connect a car battery to my 2000w power inverter

Question by chainsaw0068   |  last reply


MANUAL OF POWER EXPRESS INVERTER/BATTERY CHARGER

Could any body help me with the operation manual of power express inverter?

Question by austinbby   |  last reply


can a dc to ac power inverter mess up a car?

My family is going on a long trip this thanksgiving and I wanted to use a power inverter that i have to power a portable dvd player(actually its an old laptop with a dvd drive) on the trip (its battery is toast and I have no car charger) my mom thinks that the inverter will find a way to mess up her Toyota minivan and won't let me plug it in is she right? can a power inverter mess up a car?

Topic by clasic_traveller_diehard   |  last reply


Power Inverter or DSO Problem?

Recently bought 2000w power board to play around.  Sets DSO at 5mS/Div. The output frequency change intervally between 40Hz and 50Hz. Sets DSO at 10mS/Div. The output frequency stable at 50Hz. Please advice which once is the problem? Update June 1, 2017 1. ...do you have a load on the power supply ? With or without load, same results. 2. Try changing the scopes trigger level.. Getting same resulted too when changes the trigger level.  3. Measures with multimeter. Get 49.98Hz and this is normal. 

Question by GearUp   |  last reply


What inverter should I use to tie in 3 60 watt panels into an outlet? Answered

I am trying to find a fairly cheap inverter to tie my panels into my home. I am planning to add a few more panels in the future. I am not going to add a battery bank. Thank you.

Question by pokey02   |  last reply


Connect power inverter's AC output to my home AC power

How can I connect a DC power inverter's AC output to my home AC power without a transfer switch so the inverter does not get damaged.  Connect it directly or with what ?

Question by jehardy   |  last reply


Wind Power?

Rather than charge batteries, can an inverter be used to run the power from the turbine to the grid?

Question by Hubiewan   |  last reply


A question about power inverter chips?

I need an inverter to use the 12DC of a battery to get an AC varying from 1 to 12V, and also the frequency has to be varying from 10 to 80KHz. the inverter will need to deliver 2W max.  I want to know if inverters do even exist in of IC chips, or will it be a board that i can buy, or am i obliged to make it myself? does a 2W inverter even exist or do people use oscillators for these kind of powers? 

Question by ZakariaF   |  last reply


Power Sine Wave Circuit

Hi I am trying to build an economical circuit to power an AC electromagnet. The energy source has to be a battery, preferably less than 24v. The power draw of the electromagnet will be about 500W (the application requires a high-power alternating magnetic flux). I'm thinking of making a sine-wave generator and a simple transistor amplifier with high power transistors. Can anyone suggest circuits for this? My knowledge of electronics is not that great, but I'm quite enthusiastic about this and I believe I can give it a try. Any help will be appreciated. Thanks R

Question by Richy33   |  last reply


hello anyone here know how to build a true sine wave inverter?

I just wanted to build my own power inverter to get a better understanding of how they work.

Question by first1   |  last reply



240vdc to 240vac power generation ?

I’m curious as to why most wind turbines and solar panel inverters generally range from 12-48vdc why cant it just be generated at 240vdc and convert that into 240vac? My understanding is that higher voltage means less current therefore less resistance and heat produced, resulting in a more efficient system. I always hear about inverters generating a lot of heat under load. Does anyone know if this is possible? I'm looking into building a wind turbine to feed power back into the grid, but the cost of inverters are making it an unfeasible project. cheers.

Question by grimgroper   |  last reply


Bad power board replacement? Answered

I have a BenQ FP731 monitor with a bad power board. I'm waiting for the spares to arrive so I can repair it, but is it possible to replace the entire board with this one? http://cgi.ebay.com/Power-48-L9002-A14-BENQ-FP767-FP737S-Without-Audio-/250745267419?pt=LH_DefaultDomain_0&hash=item3a619524db the only thing scaring me is that its got four of those little white connectors for the lamps, while mine has just two broad connectors with three wires each. I guess its for two lamps and a ground on both of them, while on the one that I just posted, its separate connector to each lamp..... Would It work if I hack the connection to the lamp and use the new board?

Question by pro2xy   |  last reply


can I use AA battery bank to power an inverter (3000ma 12v)? Answered

Can I use AA battery bank to power an 50w inverter (3000ma 12v)?

Question by celalboz   |  last reply


Oxygen concentrator on power inverter in car?

Can I run an O2 concentrator on a power inverter in my car? How do I figure it out?

Question by NotAPot2PN   |  last reply


Solar power questions? Answered

I have this same solar panel 5 watt 12 volt panel  http://store.bruntonoutdoor.com/portable-power/panels-and-chargers/solarflat-trade-5-12v-orange/ And a 400 watt power inverter. What type of lightweight battery should i get? (12 volt, something amp battery)

Question by alpe_97   |  last reply


How many MOSFET's do I need? Answered

I am building a 2000W inverter powered by a car battery at 200A and I am unsure what to look at to find how many MOSFET's I need. Do I look at continuous current (in Amps) or power dissipation(in watts)? If it's power dissipation might you be able to suggest a MOSFET with a high power dissipation that is under a continuous current rating of 75A?

Question by The MadScientist   |  last reply


How to make a 6vdc to 200vdc converter?

Hello, i am a bit confuse about how to convert 6v dc to 200 v dc having a least power output of 25watts. is it possible?

Question by ubdussamad   |  last reply


Grid tie solar inverter power from a fixed voltage source?

Hello there! We have a 4Kw solar system installed at our home. We also happen to have 2 seperate circuits (ie 2 electricity meters). Annoyingly the solar panels are installed on the circuit that we don't use much electricity off so most of the generated electricity flows into the grid and (I know it's selfish) we don't benifit from it at all. There happens to be one lonely socket next to the solar inverter that is powered off the other electricity circuit and I'm fairly sure that the two circuits are on different phases. This is what I wanted to do and I was hoping someone might be able to validate this: I install a 240v AC to 24v DC converter (PAK650-24) and then an inverter to convert this back to 240v AC to supply that lonely socket where we need the power. Our solar inverter has a clever power detecter that switches a relay when production goes above 1Kw so I would connect this circuit to that relay. I also wanted to use a solar grid tie inverter from ebay because they seem most reasonably priced. They do however have a MPPT algorithm which is where I am not sure how it would react to a voltage source. Might anybody be able to tell me whether it would be fine to do this and most importantly about fixed voltage sources and solar grid tie inverters (which aren't really meant for fixed v sources). Many thanks, James 

Question by fotherby   |  last reply


How to power speakers with batteries without an inverter?

I have a powered speaker system that runs on 120 AC. I have the battery and the inverter but I know the speaker functions on DC and it has an built-in AC-DC inverter. So to use my battery, converting it to AC with an inverter and then the speaker converting it back to DC and all this process will result in a lot of loss of energy and cost me in terms of runtime.  I would like to know if there is a way of by-passing the built in inverter and connecting the battery directly to the speaker without causing harm? What I thought was using a multimeter, measuring the voltage and the amper output of the built-in adapter and buying a battery with the same numbers and connecting it directly there. What are the risks in there? because I don´t want to burn my speaker.

Question by queremosvino   |  last reply


high voltage power supply inputs with a relay??

Hi, I Have a high voltage power supply (5kv) its basically  a flyback driver with a flyback transformer. there's no documents on it. here's my problem. It take 24v DC  and it goes through some sort of weird relay (http://www.selectronic.fr/includes_selectronic/pdf/Siemens/DS2E_S.pdf) and the 8th pin is connected to ground 9th pin seems to be the output. I just cant get it to work. I'm really horrible with analog electronics. Any help would be greatly appreciated.

Question by mman1506   |  last reply


CCFL tubes...what is the range of power they operate in ?

I see write-ups aplenty of how to fix screen backlights and re-using CCFLs from scanners and such, and ALL say 'beware high voltage !'. NONE, however, specify what those voltages/currents/frequencies may actually BE ???! Several times I have been offered LCD monitors with obvious backlight problems and have only gotten one to work by replacing bad caps. This all makes me wonder - could it be that the ballast from a dead, smallish CFL might power a CCFL quite nicely - does anyone know ?! Thanks for any replies ! PS: Please, no lectures about the dangers of high voltages and so forth, this question is being asked by an adult who is safety conscious.

Question by vtsnaab   |  last reply


Will a computer power supply run efficiently on a 12V power inverter? Answered

I am planning to buy a modified sinewave inverter just to power some basic stuffs from a car, but one of my main problem is that i want to power 2 sensitive devices on the inverter. I have a 450W computer powersupply Will it run smoothly or will make hissing noise or will get fried after minutes of use same goes with a 19" inch LCD screen some help here would be  much appreciated thanks

Question by ARJOON   |  last reply


How do I make a 240volt inverter from a microwave transformer

Good enough for power tools I saw one on the net somewhere and can't find it. I got a microwave from the tip but it was too good and so it has a new life in the kitchen.

Question by tezzz   |  last reply


To make a 12 volt and 1.5A dc supply which supply power for 1.5-2 hours

I want to make 12volt 1.5A dc inverter which will supply power for 1.5-2 hours for my router. Please tell me how to make it?

Topic by mahedi_aiub   |  last reply


can i use a 110v inverter connected to a 2000w travel converter to get 220v and power a 220v fridge Answered

I might need to do this when there is an electric outage, can we connect an SLA to inverter (110v) to a converter people use when they travel to 220 v countries?

Question by celalboz   |  last reply


6v to 12 v step up power inverter to charge phone from a 6v motorcycle electrical system. advice sought.

Hi, just below are two pictures and details of different mini 6v to 12v step up power inverters. I have tried to use the smallest sized one out of the two without success. I installed the smallest one on my old 50cc moped with the idea that it would charge my mobile phone as I rode my bike.  My bike has a 6v electrical system, hence the need for a 6v to 12v power inverter. I also bought a 12v incar charger lead from a phone shop. Its the type of lead you plug into your car cigerette lighter to keep your phone fully charged. It charges my phone well inside my car but not on my bike! On my bike. I connected the phone charger lead to the 6v to 12v step up inverter expecting it to charge my phone just as it would do in my car. But no! It does not charge my phone correctly. It seems to send power to my phone in short spurts and gaps. It will charge for 5 to 8 seconds. It then stops charging for 7 seconds and continues to charge for a further 5 to 8 seconds and the cycle repeats over and over. Having it charge this way means that the phone does not receive a good charge and eventually my phone battery goes low and then dies. I think there could be stability issues with this 6v to 12v power inverter. I have found another type of power inverter for sale. The seller says his inverter is quite stable. I may end up replacing the old inverter with the one. I'm hoping it will do the job more successfully than the current inverter im trying but failing to use. Im not technically minded. I have copied and pasted the web addresses of both inverters. On the sites you will see the technical details of both inverters. Would someone please take a look to compare both devices for me please. I am looking for a solution to charging my phone successfully whilst on my bike. Would the bigger inverter be better compared to the smaller one  I have allready installed? This is the inverter I am currently using but doesn't work properly.  http://www.ebay.co.uk/itm/350436684000?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2648 And this is the inverter I am thinking of getting to replace the old one.  http://www.ebay.co.uk/itm/DC-DC-Converter-Regulator-Step-up-Step-down-2-1-/150657732239?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash;=item2313e68e8f As i said, Im not techinally minded and and looking for your advice. Would the bigger inverter be a good choice to replace the old one to charge my phone. Thanks for replies in advance.

Topic by selectauto   |  last reply


can i test a 90w inverter with a 1amp psu and my load is a 13w light 110v? Answered

I have tested an inverter with a cable modem psu but not lighting the light, is it due to PSUs 1amp rating or simply Inverter is faulty, I don't own a car or Battery for that matter yet.. 90w inverter 13w light 1 amp power supply.. thanks

Question by celalboz   |  last reply


How much power can this ferrite core take?

I have a ferrite transformer core and I was wondering how much power it could take?  And at what frequency would you recommend I drive it? I am planning this for a HF battery powered inverter I'm planning 24-36V input,  200-400V output.

Question by The MadScientist   |  last reply


How to make a power supply for an LCD backlight?

I have a piece of crap LCD monitor that I tore apart to build a projector, and I've been intrigued by the backlight ever since... I was thinking it'd make a cool light for a workbench or a lightbox for tracing, but I have no idea how to power it. It came out of a Starlogic 17" monitor, model number M17ANA. I've got the inverter still attached to the backlight, I just have no idea what the pinout is. If anyone has any ideas they're welcome.

Question by RelaxedSoup   |  last reply


how do i make a laptop inverter work?

hi i am wanting to be able to run a laptop inverter off a few batterys the inverter looks like the one in this instruclible https://www.instructables.com/id/How-to-Fix-an-LCD-backlight-power-Inverter-Using-/step8/Bridge-the-fuse-AT-YOUR-OWN-RISK/ i was wounderin what cables i would need to put power on ? i an not wanting the screen to work, just for the back light to glow, please help

Question by rug 


Which of this is the right Thermistor for this switching power driver board?

Hi Instructables Members' Schematic link http://www.ebay.com/itm/141408846492?_trksid=p2055119.m1438.l2649&ssPageName;=STRK%3AMEBIDX%3AIT please see the schematic on the most right. Which of this is the right Thermistor for this schematic: a) For 50S can I use this      1) http://www.aliexpress.com/item/Ptc-thermistor-500-800r-hmz13-05m650rn/1279794037.html or      2) http://www.aliexpress.com/item/2013-Thermistor-50s-50-free-shipping/1365188583.html ; and b) For NTC/10K can I use this      1) http://www.aliexpress.com/item/Free-Shipping-50pcs-10k-OHM-NTC-Thermistor-Resistor-NTC-MF52AT-10K-5-3950/715307132.html or      2) http://www.aliexpress.com/item/100PCS-10K-OHM-NTC-Thermistor-5mm-free-shipping/617213149.html Thank you in advance.

Question by GearUp 


Power Tool Corded to Cordless

Hi 'nstructables I'm building a hovercraft (see several tutorials on Instructables - the one with a leaf blower) and my leaf blower is corded. I don't want to buy 25 miles of Black and Decker High Power Extension Cabling so I'm planning to convert to cordless. Here's my idea: (in visual) Is there anything I need to add? And if so, how do I make the "12VDC-240VAC" inverter described? My blower is 1600 watt. Thanks for any help! (Black and Decker)

Topic by nitrojon   |  last reply


Variable DC input to a clean AC out put

So here is what I am trying to accomplish. I am trying to take an old Jacobs wind turbine controller that was designed for a grid tie application and make it off grid. There is a 3 phase "wild" ac input from the turbine that is rectifyed but not clipped by the internal SCR's to variable DC (40-180 volts). The sensing was designed to tie to the grid and power sync'd to line power and freq then exported or imported depending on demand. What I would like to do is build a Variable Dc input inverter that will put out a pure sine wave 120/240 vac split phase. Thus imprinting a usable power out put and allowing the cap/choke inverter to do its part. The design need not handle much power as it is only used as an imprint to regulate the power through the controller. If anyone had any idea on a build for this or a manufacturer that is producing such an item I could really use some ideas. Thanks

Topic by nbrooks 


Can I make an uninterruptible power supply for my furnace?

So, last winter, my area got TONS of snow, very cold temperatures ( I spent 20 minutes dropping droplets of water on an iron railing and literally watching it freeze), and then we lost power. Our furnace runs on natural gas, so it would've worked, except that the fan inside it and also the ignition system (I'm pretty sure) wouldn't work without power. I'm thinking of getting maybe 10 or so surplus marine/car 12 volt batteries and a high-power inverter, and running the furnace off normal 120 AC, until power goes out, then a relay ( or some solid-state circuitry) would trigger the batteries ( in parallel), which would charge either off of a solar panel outside, or wall power once the power was back on. Also, the furnace has what looks to be a pretty basic motherboard inside of it, would I need an inverter that makes a really sine-y sine wave for that, or could I get away with a cheap square wave one? Also, it's wired directly into its own circuit, though I'm pretty sure it's still 120 V. Comments, advice, etc. is welcome. Thanks!

Question by mad magoo   |  last reply


Power Inverter No Load (Idle or Standby) Current?

Hi Instructables members', Case 1: Recently build power inverter have a no load current vary 0.4 to some 4.0 amps (up and down or not stable) which causing the AC ouput also vary 230VAC ~ 235VAC. Case 2: My existing purchased inverter when switch on the no load current stay high. Some where 3 to 4 amps with the FET on power stage remove. Do anyone experience this? Where shall I begin troubleshoot. P/S: For Case 2 - earlier when switch on blown fuse. After change pre-boost FET, it no load current stay high. Thank you for those valuable reply. Finally I found the problem. Case 1: Remove the fan and ad 100uF to ground at pre boost stage. Case 2: Replace an open transistor at pre boost board that driving the push pull fet.

Question by GearUp   |  last reply


9 volt battery to power 5 watt tube amp

I searched for so long for the internet to answer me and nothing i want an inverter that will take a 9 volt battery and power a 5 watt tube amp. the amp is handwired, there's no circuit board and i want to believe its possible

Topic by ethan.heil   |  last reply


How do I make a power inverter for CCFL's? Answered

I want to know how to male a CCFL power inverter because i have a lcd screen backlight, but i never had the inverter for it. ho do i go about making one?

Question by zack247   |  last reply


Solar power for a laptop

Hello everyone I have an idea to build a solar power suppl for a laptop using a 12"x12" solar cell. M question is this, if I solder the leads from a power inverter to the solar cell, it should be able to power or charge a laptop correct? Is there something else I would have to do?

Topic by DaMadProfessor   |  last reply


DC --> AC Inverter Question

I just bought a 12vDC to 115AC power inverter. But it will shutoff when the voltage drops below 10v :/ Can I disable this? It's annoying as I'm running it outside of a car so I cant just start an engine to charge the thing.

Topic by acer5050   |  last reply


Low Power pc?

Right for some time now I have been thinking of building a computer that is low power 20w max needs to have some processing power preferable duel core i have been looking at 'intel D510MO' link to spec > http://www.ebuyer.com/product/191127 What i would like is for someone to advise me on what to buy to keep the power low (20w or less) and the performance high at a fairly low price

Question by Daniel Deacon   |  last reply