The fact the label says its a pure sine wave unit is a clue. :whistling2:There are usually three different types of invertor outputs
1 - Square wave.
2 - Modified sine wave.
3 - Sine wave.
Yours is most likely no 3.
if it wasn't they usually say so.
Would you place a stepped sine wave under the modified category>There are usually three different types of invertor outputs
1 - Square wave.
2 - Modified sine wave.
3 - Sine wave.
Yours is most likely no 3.
if it wasn't they usually say so.
As for the ambulance types,
Could have better regulation,
Or better protection.
Don't want the de-fibrilator suddenly getting 240v !
yes !would you place a stepped sine wave under the modified category>
THD what, voltage, current? Acceptable output at acceptable load or generated by a load before the waveform is distorted?What is its specification for total harmonic distortion? That will get us going in the right direction for an answer...
Who drew that?~CS~![]()
maybe this helps?for 600 watts it wasn't cheap and I was wondering if I bought a crappy brand.
>>??What is its specification for total harmonic distortion? That will get us going in the right direction for an answer...
Less than 3%What is its specification for total harmonic distortion? That will get us going in the right direction for an answer...
The "modified sine wave" is just marketing BS. They make it sound like there's just some minor step preventing it from being a clean sine wave, which is a lot better than the actuality: It's a hard square wave with the corners rounded off.There are usually three different types of invertor outputs
1 - Square wave.
2 - Modified sine wave.
3 - Sine wave
Defibrilators are battery powered.There are usually three different types of invertor outputs
1 - Square wave.
2 - Modified sine wave.
3 - Sine wave.
Yours is most likely no 3.
if it wasn't they usually say so.
As for the ambulance types,
Could have better regulation,
Or better protection.
Don't want the de-fibrilator suddenly getting 240v !
3% THD @ 28 dB ( 10*log(600) ) power output is average for a pure sine inverter and gets within an acceptable threshold. I've seen pure sine waves with MUCH worse. You would never want more than about 5% THD or 3% THD on a single harmonic in your electrical system (IEEE spec). Higher THD ratings create excess power dissipation in tfmr's and excessive heating in motor cores. You probably also wouldn't want to run an audio amplifier off of this device if you are concerned about the sound fidelity. Good inverters will be less than 1% THD.