Hopefully? Another 48vdc-240vac Toriod Inverter build.

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tinyt Guru Joined: 12/11/2017 Location: United States Posts: 441	Posted: 02:36am 31 May 2023         KeepIS said   Yes, Poida discussed the correct way and the math to do this using a saturation tester and DSO. It also allows you to calculate the Inductance at various points as you climb the slope to full saturation.       . Thanks to you and Poida. I bought this 200A inductor which does not publish its inductance. So, I made a tester from your schematic, total capacitance is 20000 uF. Took me some time to make the scr trigger work. I used a 200A 75mV shunt, and a DSO. I enabled bandwidth limiting for both channels to filter out some of the 'noise'. Luckily the DSO I borrowed can save readings in excel format (csv). But I think bandwidth limiting is not applied to the numbers. I did some calculations to selected ranges. Red colored numbers are what I think the approach to saturation. Looks like its inductance is a little low for the inverter I am making. Thanks for sharing your work. Edited 2023-05-31 12:38 by tinyt