Help with inverter generator

[bermanc]

Hello all,

I hope it's OK to ask my question here, and am thankful if anyone can answer it.

I recently bought an inverter generator off eBay, and am having an issue with it, possible with the sine wave output.

When I plug a mobile phone in it, it will charge, but the touch screen becomes unresponsive, and the phone will do random things like open apps, etc. This is not the case when I plug it into a different inverter generator or a wall outlet.

My question is, is the generator safe to use for sensitive electronic equipment like TV, PC, etc., or is it faulty and in need of returning?

Thanks,
Bermanc

 

[kellys_eye]

Make/model? We can't guess.

Many claims for sine wave output are really 'modified sine wave' - it's cheating really. If the device states TRUE sine wave output you would need to prove this using an oscilloscope or just return it under warranty as not fit for purpose.

 

[bermanc]

Sorry, didn’t know it was of consequence.

It’s a Gentrax 2kVA inverter:

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com.au/ulk/itm/271505082427

What I’m wondering is, is the generator faulty and not safe to use, or is this just a symptom of the modified sine wave? Can I use the generator for fridge, fans, tv, etc., without damaging them? I don’t mind if I can’t use my phone while it’s charging so long as it’s safe to charge it.

Thanks for the reply.

 

[kellys_eye]

That looks pretty 'responsible' and is likely to be as good a sine wave as you'll get from such a portable unit.

Try using the charger with an additional load connected (say a 100W lamp) to ensure the output voltage is getting proper regulation. The (extremely) small load of a simple phone charger might not allow the regulation circuitry to work properly.

I also note that the generator has a couple of 12V outputs - these would be MUCH more suited to using a phone charger (via the appropriate car-type adapter lead) and may resolve your issue without having to fit an extra load.

 

[bermanc]

Hi again,

Thanks for taking the time to reply.

I have tried running the inverter under load (light bulb, fan) with no difference.

I also have access to a Honda eu20i which causes no issues to the phone even without any additional load.

So I think either the inverter is not putting out a proper sine wave as it is advertised to do so, or it is faulty. How am I able to know the difference?

It does have a 12v output but not the car type. Just a funky two slot socket for charging 12v batteries.

I am concerned about charging my phone or running a tv or computer off it in the event of an extended power outage.

Thanks for you time.

 

[kellys_eye]

Defo sounds like a defect then. The only true way to test would be to use an oscilloscope to monitor the output waveform for stability and purity - probably beyond most people's normal acquisition - so I'd be looking to instigate the warranty.