Reply to post: Re: Doomed from the start

Are you broke? Good with electronics? Build a better AC/DC box, get back in black with $1m

Paris Hilton

Re: Doomed from the start

Which is why Paris for being a little flip. Nevertheless ...

From the official requirements doc:

"The inverter will be tested using a near ideal voltage supply set at 450 V. This power supply will

be floating. Its positive terminal will be connected to a 10 Ω wire wound resistor which will in turn

be connected to the positive DC input terminal of the inverter. The voltage source will be very

close to ripple free."

Efficiency is computed as:

"The inverter must demonstrate an efficiency of > 95 %. The efficiency is defined as:

Efficiency = DC Power Input / AC Power Output

and will be determined by measuring the input voltage and current and output voltage and

current, using the real component of the power at the fundamental frequency."

I argue that they do not specify on which side of the resister the are measuring the DC Power Input.

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