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

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KeepIS Guru Joined: 13/10/2014 Location: Australia Posts: 2039	Posted: 09:36am 14 Jan 2023       Thanks, I saw that great tester, but this method has been used for ever and was quick to make, the power supply does nothing except charge the CAP via a 20 ohm resistor. The cap can easily dump over 1000 Amperes into the inductor. The big Transformer on the test Jig is just one I had lying around, and it gave me almost 100v to the Cap - really only need around 50V.   However, I found I needed a .47uf cap to stop noise on the SCR trigger from the supply, once I did that I got really clean signals. I was just about to post a few more shots when I noticed Solar Mike post a link and some info on the Blue toriod, thanks for that, really appreciated.   Quote   Some info from the link Model:MS226060-2 Outer diameter:57.1 mm Inner diameter:26.4 mm Height:15.2 mm Magnetic conductivity:60? Inductance coefficient:138 nH/N2 Material:85% iron +6% aluminum+9% silicon I unwound the other 3 blue toriods I had and placed 6 turns through the 6 toriod stack. I measured 45uH and very high saturation, fitted it to the inverter and it's silent, the Toriod itself is silent and when switching on the big Variac, everything is as quite as a church mouse. 6 stack choke. 3.3 ohm instead of choke in Jig. Clip lead across the choke in the Jig. 200A per division, 6 stack choke. Edited 2023-01-14 19:48 by KeepIS