Nano Power Inverter - Roll Your Own Style


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rogerdw
Guru

Joined: 22/10/2019
Location: Australia
Posts: 757
Posted: 01:13am 29 Mar 2023      

Mike, Warpspeed suggested I measure the idling power loss of each of those cores while they were bare.

I reported the results back then but figure it may be helpful to paste (the corrected name version) in here.


Wound both with 20 turns.

#1Tx is the rough looking Eaglerise Electric

CSArea of 37.1 sq/cm

16.47V RMS gives a result of 1 Tesla on the calculator.

.8235V/Turn

Fed winding with 16.47V RMS and showed reading of .47A

Am I correct in saying that VA = 7.74 ?


#2Tx is the much better looking Hefei ECU-Tamura toroid

CSArea of 35 sq/cm

15.54V RMS gives a result of 1 Tesla on the calculator.

.777V/Turn

Fed winding with 15.54V RMS and showed reading of .36A

VA = 5.59