Outback IC
This amazing product should arrive this week. I'm tired of replacing inverters every 5 years. At 61 pounds I'll leave it on the basement floor. Cotek inverter just up an died on me. It runs...
Forum Discussion
There are basically two ways to build an inverter
Method 1
Convert the input voltage to a high (40-100 KHz) square wave (cheap and easy) and run that through multiple small transformers in parallel (cheaper than one big one). Convert this square wave back to DC, use that to power a (typically Class D) amplifier that is feed with a sine wave.
Method 2
Use the input voltage to power a (typically Class D) amplifier that is feed with a sine wave. This amplifier must be very powerful because the output is feed into a LARGE transformer which kicks it up to the desired AC output voltage.
I don't understand why, but Method 2 seems to result in a much more "robust" piece of equipment.
Additional comments. A microprocessor is required to monitor "what's going on", run display panels, turn fans on and off, etc, etc. Fuses are a joke on inverters ! Fuse are SLOW compared with say one transistor dying. There is no way they can shutdown power before that one transistor takes out a dozen more and several other chips. Fuse are there to make you "feel good".
Method 1
Convert the input voltage to a high (40-100 KHz) square wave (cheap and easy) and run that through multiple small transformers in parallel (cheaper than one big one). Convert this square wave back to DC, use that to power a (typically Class D) amplifier that is feed with a sine wave.
Method 2
Use the input voltage to power a (typically Class D) amplifier that is feed with a sine wave. This amplifier must be very powerful because the output is feed into a LARGE transformer which kicks it up to the desired AC output voltage.
I don't understand why, but Method 2 seems to result in a much more "robust" piece of equipment.
Additional comments. A microprocessor is required to monitor "what's going on", run display panels, turn fans on and off, etc, etc. Fuses are a joke on inverters ! Fuse are SLOW compared with say one transistor dying. There is no way they can shutdown power before that one transistor takes out a dozen more and several other chips. Fuse are there to make you "feel good".
