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I have a cotek s1500-212 pure sine wave inverter.when switched on it stays on for about 6seconds then turns off for about the same lenght of time it keeps doing that all the time.Can you help?

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  • Electronics ... Master
  • 47,682 Answers

Over heating component in the circuit

Posted on May 08, 2017

Testimonial: "Thankyou Bill.There is no load on inverter can that still happen?"

  • Mario Barravecchio
    Mario Barravecchio May 08, 2017

    Can the overheating still happen when no load?

  • Bill Boyd May 08, 2017

    yes
    when it is witched on loaded or not , the electronic components are still energized

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Generator burning my electronics up


take you generator in and have the output tested for correct voltage and sine wave configuration
electronics rely on a perfect sine wave ac current as a manufactured sine wave affects electronic components such as capacitors, transistors and diodes
generator sets that run an alternator ( not an inverter ) have a pure sine wave and have less affect on electronics.
go google and type in search headings like ---sine wave, inverter sine wave, sine wave affects on electronics, alternator operation and inverter operations and then you may get a pointer as to why your inverter gen set is affecting your electronics

Jul 23, 2016 | Honda EU3000iS Inverter Generator

Tip

WHAT IS A POWER INVERTER?


A power inverter is an electronic device that converts electricityfrom one form to another. Power inverters have become more popularrecently as the technology has become more efficient and much moreaffordable.

The most popular use for a power inverter isconverting battery electricity into mains electricity. For exampleconverting your car batteries' 12 volts DC into mains electricity 240Volt AC (Australia) or 110 Volt AC (USA).

WHAT POWER INVERTERS WILL HELP YOU DO
  1. Power inverters enablemains operated electrical equipment to be used even where there is nomains outlets, like in your car, caravan or even on your boat!
  2. Powerinverters bring creature comforts from home when you go camping orcaravaning allowing you to use your TV, fridge or electric shaver infact most of the normal mains powered conveniences from the home.
  3. You can charge your laptop in the car even if it doesn't happen tohave a 12 volt adapter. In fact a power inverter can be a very handygadget just to have in your car for those times you need to use a mainspowered appliance while you're away from a power socket.

WHAT TO LOOK FOR WHEN BUYING A POWER INVERTER
Apartfrom looking for a good quality well priced product there are a coupleof important elements to consider when selecting your power inverter:

HOW MUCH POWER IS ENOUGH ?
Powerinverters come in a range of power capacities so selecting the rightone for you is very important. Your power inverter needs to be able toprovide sufficient power for the equipment you want to use it with.
Here is a brief check list:
  1. Check the power consumption for the device you want to power
  2. Allow an additional 20% free board
  3. Add the power for all the devices you want to run at the same time
Note also that devices with induction electric motors like an power saw mayrequire 3 to 7 times the operating power when they start.
Usingan under-powered power inverter may damage it or the appliance you aretrying to use, so be sure to check the specific wattage requirementsand operating instructions for appliances / tools to be used.

PURE SINE WAVE INVERTERS
Normal mains power is known as Alternating Current (AC) and is a sine wave shape like the black line in the drawing below
Pure sine wave (black) versus modified sine wave (red)
Atypical power inverter produces a 'modified sine wave output' like thered line in the drawing above. While this works for most appliances,light dimmers, variable speed drills, sewing machine speed controls,some laser printers etc. will not operate correctly with a modifiedsine wave power inverter.
Pure sine wave power inverters areespecially designed to provide a more accurate sine wave output and socan be used with these appliances, but unfortunately they are moreexpensive.
Check with your with appliance manufacturer or itsspecifications to confirm if you can use a conventional power inverteror will need a pure sine wave inverter.
WARRANTY
One of thegreat things about electronic equipment is there is no moving parts(although there is a fan in some models) so you can expect a longserviceable life from a power inverter.
STANDARDS
Powerinverters generate dangerous mains voltages so ensure the product youchoose is approved for use with your mains voltage and supplier.
Powerinverters can also generate electro-magnetic radiation that caninterfere with other electronic equipment such as radios transmittersetc. Check for compliance with relevant standards such as C-Tick etc

SAFETY
Powerinverters can generate potentially lethal voltages so the utmost ofcare should be exercised using them to avoid accidental electrocution.

SUMMARY
To select your power inverter carefully check the power requirements for the appliance(s) you intend to use it with.
  1. Start power - Allow up to seven times for an induction motor
  2. Operating power - Allow a 20% margin
  3. Pure or modified sine wave

on Mar 04, 2010 | Electronics - Others

1 Answer

Why is my pure sine wave keep blowing fuses?


please check if all attached connection are tight .Sometimes loose wire connection also causes fuse blow

Sep 15, 2014 | Electronics - Others

1 Answer

I have a 24 volt 5000 watt pure sine wave inverter that keeps tripping. It has 28.6 volts going in from the battery and 115 volts going out at 8 to 12 amps any suggestions.


It sounds to me that you have a load that draws too much from time to time. If the inverter will run without a load without a problem, try adding loads one at a time until it starts to trip off. That should give you an idea as to what the problem is. It could be that there is a problem internal to the inverter that causes it to trip prematurely..

Jul 11, 2014 | Inverter Aims Pure Sine Wave Power...

1 Answer

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...

Feb 05, 2018 | Electronics - Others

1 Answer

Need owners manual


Without knowing make or model other than 600 Watts and pure sine output:
http://www.donrowe.com/user_guides/samlex/ssw_series.pdf
is for a series of pure sine inverters, yours should be similar enough to the 600 Watt version to be of practical use.

Jan 14, 2012 | Inverter 600 Watt Pure Sine Wave

2 Answers

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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1 Answer

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.

Mar 05, 2009 | Thermal Engineering Corporation I-Tec 150...

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