New JAL project. Adjustable constant current source and constant current sink

[rob...@hotmail.com]

Hi all,

Just FYI.

I uploaded a new JAL project to Youtube to further promote JAL. I also created an Instructable for it.

If you want to watch the video you can find it here: https://youtu.be/TT_d4CTmfRM

Kind regards,

Rob

[David VB]

Hey Rob,  

Congratulations: You are on Hackaday !    https://hackaday.com/2025/08/12/current-source-mixes-old-school-and-new/ 

[Rob CJ]

Hi David,

Haha, I did not know that these things happen. Apparently my stuff looks 'old school' 🙂.

Nice to see that. And good of you to comment on it to get more people interested in JAL.

Thanks for the info!

Kind regards,

Rob

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Van: jal...@googlegroups.com <jal...@googlegroups.com> namens David VB <pinhe...@gmail.com>
Verzonden: dinsdag 12 augustus 2025 11:34
Aan: jallist <jal...@googlegroups.com>
Onderwerp: [jallist] Re: New JAL project. Adjustable constant current source and constant current sink

 

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[pinhe...@gmail.com]

Even better, you've got the attention of Microchip itself

https://www.facebook.com/share/p/14Jp6XiPYH7/

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[Rob CJ]

Hi David,

Wow, that's nice. Maybe the will contact me to sponsor JAL 🙂.

About Hackday. It seems something like Instructables. Maybe its good if I post my projects also there.

And I now understand why they call this device 'old school', it must be because I am using an analog Ampere meter. I did that on purpose because it gives - at least that is my opinion - a nice reading. I even purchased it especially for this project. There is one disadvantage of this meter and that is the accuracy. In the video I calibrated the device with 1 Ampere but when I later set a current to 200 mA you see in the video that it does not reach that on the meter. So after the video I re-calibrated the device using a multimeter (so digital Ampere reading) and noticed that it was initially calibrated with a too low value. It seems that the analog Ampere meter gets less accurate at the end of the scale. So for correct calibration I have to go over the 1 Ampere on the analog Ampere meter. After that the current that I selected was OK.

Kind regards,

Rob

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Van: jal...@googlegroups.com <jal...@googlegroups.com> namens pinhe...@gmail.com <pinhe...@gmail.com>
Verzonden: dinsdag 12 augustus 2025 21:00
Aan: jallist <jal...@googlegroups.com>
Onderwerp: Re: [jallist] Re: New JAL project. Adjustable constant current source and constant current sink

 

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[pinhe...@gmail.com]

Hi

You cannot post directly on Hackaday.  It's a news aggregator, electronics related, whose redactors pick up projects, infos, ....  that they estimate of interest.

A sponsorship from microchip would beca great thing !

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