Belkin inverter

Adventurer · Member

Belkin inverter

DeBe · Guru

Hi Adventurer, You dont say what size it is, I have googled Belkin & the 300w version looks simmilar to the power house inverter 300W from Altronics which is a Modified Square Wave type, this is a guess as non of there info on inverters actualy tells you. If it is a MSW inverter it should be ok. cheers Daryl

Adventurer · Member

Thanks for your help Daryl!

Peter_n_Margaret · Guru

It is possible for Modified Sine Wave inverters to destroy electronic gear.
I would strongly recommend using ONLY isolated Pure Sine Wave inverters.

Cheers,
Peter

Adventurer · Member

Thanks for that Peter.

DeBe · Guru

Hi Adventurer, Pict of wave form of a MSW inverter output, A Altronics Power House Inverter, M8076 300Watt The wave form out of this inverter is relatively clean & ive never had any problems running gear of it. You are likely to have trouble with Square Wave inverters which can have HV spikes on top of the wave form & these tend to be the realy cheep inverters. Cheers Daryl

DeBe · Guru

A nother option which I use is a JayCar 12V, 150Watt Laptop powersuply MP3472 $74.95 is switchable out puts 15,16,18,19,20,22,24,Volt & comes with DC adaptors & 6Amp o/p. this way is probably a more efficient way of running a computer of 12Vdc. Cheers Daryl

Adventurer · Member

Thanks for all your help Daryl and Peter; much appreciated. biggrin

jimricho · Guru

That oscilloscope trace of the inverter output sure makes a mockery of the term "modified sine wave" ! Nothing much sinusoidal about that waveform!

DeBe · Guru

Its more modified than this which is a RedArc 150 W inverter. This one makes fans noisy the MSW one doesnt. Cheers Daryl

-- Edited by DeBe on Tuesday 16th of March 2010 06:58:03 PM

Peter_n_Margaret · Guru

How about a sinusoidal one to complete the trio, DeBe?

Cheers,
Peter

DeBe · Guru

Hi Peter Un fortunately dont own a Pure sine wave 12V inverter only a Genquip 2600W digital generator, heres a pic of that just to round it of. All vert scale is 50V/Cm. Cheers Daryl

-- Edited by DeBe on Tuesday 16th of March 2010 09:23:51 PM

jimricho · Guru

Any non-techies still with us just talk amongst yourselves for a few minutes wink

For techies only....

It would be interesting to see the waveform of a real world PSW inverter. Many years ago in a previous life when I was gainfully (?) employed I was sorting out performance discrepancies of equipment operating on mains voltage and on a generator and found significant "rounding" on the top of the generator waveform probably due to 2nd harmonic distortion. (another way of saying there was probably a significant 100 hz component). This meant the peak voltage was lower than it should have been relative to the RMS voltage.

That second photo shows a lot of crap (like that highly technical term? wink

) that might play havoc with sensitive electronic stuff. As well as the leading edge spikes there appears to be some high frequency hash on the negative going pulses.

DeBe · Guru

Yes Jim that woried me to It was taken on a RedArc 150W inverter that i have but Im not keen to use either. Il throw in the circuit for the Genquip generator which is the 3rd pic, they are a close copy of a Honda That close there was legal action taken by Honda in Europe. They are rather interesting the main winding is 3Phase & runs about 350 - 400V AC @ high freq as there is 24Pole Stator & magnetic rotor. The inverter unit rectifies the 3phase then its choped up at 50Cycles it also drives a stepper motor on the carby in Eco mode to vary the eng RPM to the load. Cant help my self Jim when I buy some thing I just have to know how it works just incase I have to fix it. Cheers Daryl

DeBe · Guru

Here is another one Jim, Its a GMC generator 2 stroke using Capacitance Reactance voltage regulation I know some people dont like these but I have run a Computer controled auto washing machine on it when the power went off & didnt apear to have any adverse efects on it. Cheers Daryl ( also only 2Pole Genny)

-- Edited by DeBe on Wednesday 17th of March 2010 09:21:20 PM