"New" sine wave inverters
Most of the "popular" sine wave inverters are based on designs that are 10 or more years old. I know that there are newer integrated circuits that should allow the manufacture of lower cost inverters...
Forum Discussion
I'm not sure how you'd search for a new inverter ... presumably you mean a digital switching PSW versus an old school analog PSW?
I love my MagnaSine PSW but it's one HEAVY B**TARD with the huge inductor in there that its slow analog design requires. Compare it to the switch-mode (digital inverter) used in my Yamaha generator, night and day size and weight different.
My guess is it's an economy of scale thing... the old analog technology is proven and the manufacturing process is established, fine tuned and as efficient as it can be. In order to retool to make switch-mode inverters, they'd have to spend the $$$$ modifying a reference design from Texas Instruments or Diodes Inc, and then build a new manuf. process around that design.
Maybe if the price of copper greatly increases, to where it's no longer profitable to include a hulking huge inductor they will consider moving on to a switch-mode design.
I love my MagnaSine PSW but it's one HEAVY B**TARD with the huge inductor in there that its slow analog design requires. Compare it to the switch-mode (digital inverter) used in my Yamaha generator, night and day size and weight different.
My guess is it's an economy of scale thing... the old analog technology is proven and the manufacturing process is established, fine tuned and as efficient as it can be. In order to retool to make switch-mode inverters, they'd have to spend the $$$$ modifying a reference design from Texas Instruments or Diodes Inc, and then build a new manuf. process around that design.
Maybe if the price of copper greatly increases, to where it's no longer profitable to include a hulking huge inductor they will consider moving on to a switch-mode design.
