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Joe Hynes Posted on Oct 31, 2018
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My inverter pulsates when providing the modified sine wave power to my pumps

1000 Watt digital power inverter/ charger also battery voltage displayed on inverter is higher than what I measured with the multimeter at the battery.14.7 volts verses 13 volts as measured

1 Answer

Argospete

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  • Master 1,035 Answers
  • Posted on Oct 31, 2018
Argospete
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If not to old, return to suppliers need bench attention if readoutbis her than should dont run. possible possible fire hazard

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Anonymous

  • 2992 Answers
  • Posted on Apr 16, 2009

SOURCE: need small microwave for inverter on houseboat

Look at the rating sticker on the oven and use the AC power rating as your guide. The cooking power of the oven is not important, but the power it needs from the AC supply is. Voltage times current is the supply power needed (watts), and you want an oven that will draw less than the inverter's continuous rating, less any power being used by other appliances.

For instance, a microwave rated for 120 volts AC at 10 amps needs 1200 watts. Your inverter would be OK with this as long as other devices aren't using more than another 1000 watts. You can't use the inverter's peak rating. That's only for brief bursts, like when the microwave first kicks on and draws some extra current.

Any mid-power (600 watts or so) oven should be OK.

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woozie38

  • 608 Answers
  • Posted on Mar 23, 2010

SOURCE: Run a CPAP on a power inverter

I would not do this, you really need a pure sine wave inverter to guarantee the safety of your CPAP machine. At the price they are selling this device it could not be pure sine wave. 150W pure sine wave would be $70-$100.

Anonymous

  • 102 Answers
  • Posted on Sep 19, 2012

SOURCE: i have 800va microtek inverter non sine wave.i want to know what is the output voltage available

The voltage should be the same for both. Maybe one or the other isn't calibrated correctly. Have a friend with another multimeter check the output, and then take the voltage that is the same from his and yours.

Anonymous

  • 1 Answer
  • Posted on Nov 18, 2012

SOURCE: Grundfos Pump On Xantrex Modified Sine Inverter?

SOME MOTORS HAVE TROUBLE, starting on Modified sine wave power. Grundfos is a high quality unit, you could try an other motor driven load to see how it is handled by your power supply.

the_mystic_t

Rick Deno

  • 10 Answers
  • Posted on Jul 23, 2014

SOURCE: can I plug a camera, shaver, or cordless tool battery charger into this Modified sine wave

It depends on the charger. Many, especially newer, battery charger do not like modified sine waves at all. It's funny, I can run my desktop computer all day long on one, but I "smoked" a laptop power supply trying it. If the charger says don't do it, then don't do it.

The problem is not with the battery, it's with the way the charger itself is designed.

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Tassimo coffee machine

Most power inverters require the vehicle to being running to operate, and make sure it's the correct wattage, if it's a small watt inverter it doesn't have enough power, as a coffee machine is considered higher wattage, hope that answers your question ?
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I'm trying to run a 750 watt whirlpool compact microwave with a 2500 watt Cobra inverter. The microwave runs normally, but it won't heat. If I plug it in at my house it heats fine. I'm stumped. I load...

I assume your not using a pure sine wave inverter. A lot of electronic devices won't work on a lower cost inverter (modified sine wave) that has a square sine wave, either invest in a true sine wave inverter or don't run sensitive electronic equipment, I'm somewhat surprised you didn't damage the circuit board in the microwave...Below is a link of a inverter that would work if you want to spend the money for one.
2500W 5000 Watt Power Inverter Pure Sine Wave 12V dc 110V 120V ac LCD...
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Can I plug a camera, shaver, or cordless tool battery charger into this Modified sine wave

Yes you can and no it won't harm it unless something is wrong with it or the charger.

The inverter output doesn't get to the battery, just the chargers output.
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Why does my dr3624 only put out 98 vac, its rated at 120 vac? i'm off grid and my batteries are new 24 volt

Are you using a true-RMS voltmeter to measure the DR's output? The DR's output is modified sine wave, and a cheap average reading AC voltmeter will give you a reading of 90 volts or so. Alternately, if you have an oscilloscope, you can verify that the modified sine wave is around 170V peak to peak. It should alternate in segments of -170, 0, +170, 0... The duty cycle and peak voltages will vary with the inverter load.
- Tom, Sun Electronics International, Miami, FL
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Trying to run a digital projector from a car battery

I looked at the power requirements of this projector, 280W, but that assumes a nice sine wave. Your inverted is supposed to put out 400W, but it's a modified sine wave. Under ideal conditions (including a good battery) this might be just enough. Connecting directly to the battery will help a little, because of the limited ability to get current to and through the cigarette lighter. Using a 100 foot extension cord will diminish the voltage a bit (less so if it's a heavy gage wire). I would try connecting the inverter directly to the battery, run the engine and skip the extension cord. If that works, turn off the engine. If that works, try the extension cord. If it won't work with the engine running, connected directly and no cord - there are two possibilities: (1) the projector just won't run on a modified sine wave, (2) you need a bigger inverter. --- regarding (1) I have seen lots of people having trouble with various devices. You might want to ask Epson support. --- Good luck!
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Frequency Inverters DC-AC

I highly suggest you invest in a good quality inverter. For most equipment either pure or modified sine wave is fine. I would suggest you install a line conditioner after a UPS for any computer products. The line conditioner stabilizes the voltage much more closely than a UPS will.
As far as building your own, I've taken apart a lot of UPS models which have a DC-AC converter in them and they are filled with lots of heavy heat sinks, transistors, resistors, capacitors, etc. You can usually find these very cheap since the batteries die but the converter is fine. Check the input voltage of the original unit and start from there to make one easily that has everything already assembled with minor modifications.
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New batteries new cables still 99 volts output from trace inverter

What kind of inverter is it and what kind of meter are you using to check the voltage with? If the inverter puts out modified sine wave, you have to use a true rms volt meter to accurately check the voltage with. A non rms volt meter will show a low reading.
0helpful
1answer

Run a CPAP on a power inverter

I would not do this, you really need a pure sine wave inverter to guarantee the safety of your CPAP machine. At the price they are selling this device it could not be pure sine wave. 150W pure sine wave would be $70-$100.
0helpful
3answers

Grundfos Pump On Xantrex Modified Sine Inverter?

Look I been using solar and wind power for the last 20 years and never used public utilitiy, run your inverter to a braker box and connect your pump to it donot forgfet to ground the box and the inverter. that is all what you need...remmber modified sine wave may effect the life of the pump if it is cheep it may be ok or you need to get true Sine wave.
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