It is more about having current limiting during experiments, rather than switching or linear, not ?
One can always incorporate current limiting in any linear supply, as we did in the F5X Preamp.
Typical examples :
https://electrical.codidact.com/posts/279580
Under Section C.1.
Patrick
Even better, you can use a fold-back current limiter :
https://www.electronics-notes.com/a...upply-electronics/current-limiter-circuit.php
Only 3 transistors, gives you both voltage regulation and current limit that decreases with the amount of overload.
Patrick
https://www.electronics-notes.com/a...upply-electronics/current-limiter-circuit.php
Only 3 transistors, gives you both voltage regulation and current limit that decreases with the amount of overload.
Patrick
My experiences with SMPS power supplies are not so positive.
In my test bed I use two Mean Well LRS-150-24-AC-DC-6.5A-156W-24-V-DC modules connected in series with virtual ground to generate dual rail +/-24V.
It turned out that this configuration produces a disturbing component with around 110 Hz.
I would have understood 100 Hz, but 110 Hz must be the beat frequency.
Is there another explanation?
In my test bed I use two Mean Well LRS-150-24-AC-DC-6.5A-156W-24-V-DC modules connected in series with virtual ground to generate dual rail +/-24V.
It turned out that this configuration produces a disturbing component with around 110 Hz.
I would have understood 100 Hz, but 110 Hz must be the beat frequency.
Is there another explanation?
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I picked up some Harris IRFP9140 from componentonline.com (https://componentonline.com/product/IRFP9140-HARRIS/IRFP9140), however, I just got them in the mail and I fear I may have gotten fakes. Anyone have a suggestion on how I can verify? My Peak Atlas DCA75 Pro probably isn't going to do a good job with them right? I'm feeling pretty dumb right now seeing them in person for the first time. 
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