"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
GordonThree wrote:
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?
Exactly !
... 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.
There have been good, inexpensive switch-mode voltage or current feed back power supply ICs around for over 10 years. MOSFETs have improved and gone down in price since then. These designs lend themselves to driving multiple small high frequency (40-100KHz) transformers for high power (>1000 watts) applications.
The big "win" I recently found was a single IC that handles all of sine wave conversion (EG8010), minus the drivers. Add some high voltage MOSFETs and you are done. A good design would add an inexpensive microcontroller chips to monitor voltages and temperatures, turn fan(s) on and off and run the front panel display.
