Author Topic: UD2.7c Slot 7 Inductor Value?  (Read 750 times)

Offline Binukrockzzz

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UD2.7c Slot 7 Inductor Value?
« on: December 22, 2023, 04:59:25 PM »
Hey guys, I'm working on my first DRSSTC, which started off as a small project since a few years ago. Progress is extremely slow, due to high costs and unavailability of time. Recently, I have been populating profdc9's UD2.7c through hole PCB, due to the unavailability of SMD parts in my country. I have mostly populated it, other than the UVLO IC and the Slot 7 inductor. I'm unsure about the value for the inductor... I plan to run my 4.3x11" secondary wound with 39 SWG at around ~105khz with the topload (JavaTC). How should I choose this inductor value?

Offline flyingperson23

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Re: UD2.7c Slot 7 Inductor Value?
« Reply #1 on: December 22, 2023, 10:11:23 PM »
It depends on what IGBTs you're using. I believe loneoceans has a few recommendations on his ud2.7 page.  If you're a student you might be able to get a few free sample inductors.

Offline Binukrockzzz

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Re: UD2.7c Slot 7 Inductor Value?
« Reply #2 on: December 23, 2023, 06:10:43 PM »
Thanks for the quick reply!
I can get a few samples and ill try a few of them out, especially the ones on loneocean's page as I plan to use TO-247 IGBTs.

Thanks again!

Binuk

Offline Mathieu thm

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Re: UD2.7c Slot 7 Inductor Value?
« Reply #3 on: December 23, 2023, 08:07:58 PM »
I just saw that the 7m3 series is no longer available?
Where do you buy them, or which alternative you plan to use?

Offline Binukrockzzz

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Re: UD2.7c Slot 7 Inductor Value?
« Reply #4 on: December 25, 2023, 07:31:22 PM »
I'm not sure on where to find any 7m3's, but I have a friend who said he can ship me a few samples of a similar 7mm variable inductor. I'm not sure about the part numbers and such, but he said its a similar inductor by looking at the Coilcraft web page. I'll try attach some pictures when they arrive.

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Re: UD2.7c Slot 7 Inductor Value?
« Reply #4 on: December 25, 2023, 07:31:22 PM »

 


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