Looking for your advice to make an AC power meter.
requirements:
bonus:
If you know a makeable circuit, or a device that works in that low range, chime in please
fully executed 
:
The efficiencies make sense now. I've not taken in account the rectifier and input protection loss, but extremely close to the data sheet:
PI data sheet:
My measurements:
30 mW standby power
efficiency at load:
The efficiencies make sense now. I've not taken in account the rectifier and input protection loss, but extremely close to the data sheet:
PI data sheet:
My measurements:
30 mW standby power
efficiency at load:
