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Show Us Your Curve Tracer

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Johnny10:
Is this full voltage or like uTracer short pulse. Is the Gm from database or calculated?

KungFuJosh:

--- Quote from: Johnny10 on November 19, 2021, 01:25:58 pm ---Is this full voltage or like uTracer short pulse. Is the Gm from database or calculated?

--- End quote ---

It's pulsed, most tube testers are pulsed (there are a couple that aren't that have their own limitations). Gm is calculated. The GUI is a special newer version of utMax (which is open source), and it has modeling (modeling currently needs to be fixed though) for better Gm readings based on operating point.

Cubdriver:
I would definitely be interested in building one of them!

-Pat

KungFuJosh:

--- Quote from: Cubdriver on November 19, 2021, 04:03:34 pm ---I would definitely be interested in building one of them!

-Pat

--- End quote ---

Awesome, I'm glad to know there's more interest out there. My tube amp forum obviously has interest too. I'll need to buy more PIC chips before I can sell more than...2 lol. But also, unless you have a stockpile of convenient parts, a lot of the parts on the BOM are backordered until next year. Yay for covid supply chains. 🙄

I'll eventually build a website with build info and share the link here.

How are you with SMD stuff? There's a few tiny things on there. 😉

Thanks,
Josh

Cubdriver:

--- Quote from: KungFuJosh on November 19, 2021, 05:01:01 pm ---Awesome, I'm glad to know there's more interest out there. My tube amp forum obviously has interest too. I'll need to buy more PIC chips before I can sell more than...2 lol. But also, unless you have a stockpile of convenient parts, a lot of the parts on the BOM are backordered until next year. Yay for covid supply chains. 🙄

I'll eventually build a website with build info and share the link here.

How are you with SMD stuff? There's a few tiny things on there. 😉

Thanks,
Josh

--- End quote ---

Haven't played too much with SMD stuff thus far, but do have a preheater, a hot air tool, and fine tips for my regular iron.  And yeah, the supply chain is a total clusterfuck.  Been dealing with it trying to get parts for work - it's crazy.  Stock expected six or more months down the road.  On things like Molex Connector housings.  WTF?   :palm:

-Pat

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