speaking of linear (and analog) power supplies...

mhardy6647

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I went to NEAR-Fest (Home - NEAR-Fest.com ) last weekend with a mission. My mission (which I chose to accept ;) ) -- to find a decent-quality, fairly robust DC linear power supply, ideally a cheap one.

Well... there was no dearth of power supplies of all shapes and sizes. One vendor had a whole stack of very decent looking ex-lab DC power supplies at what looked like reasonable prices. One slightly homely example caught my eyes. Dual, variable 24 VDC supplies @ 2.5 amps. A little less oompf than I was hoping for, but the price made up for that -- 15 smackers.

The guy who sold it to me said it worked fine -- the only issue was that the mounting bezels for the two meters were... well... not present. I figured a little double-stick tape could provide a simple if not terribly elegant solution... so home with me it came.

Finally got 'round to smoke testing it today. It definitely works -- next step, of course, take a look at the output on a 'scope (or just hook something to it and see how quiet it is -- or isn't).

To paraphrase Crocodile Dundee

That's not a power supply.


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This is a power supply.

DSC_4595 (2) by Mark Hardy, on Flickr

🤭
 
I went to NEAR-Fest (Home - NEAR-Fest.com ) last weekend with a mission. My mission (which I chose to accept ;) ) -- to find a decent-quality, fairly robust DC linear power supply, ideally a cheap one.

Well... there was no dearth of power supplies of all shapes and sizes. One vendor had a whole stack of very decent looking ex-lab DC power supplies at what looked like reasonable prices. One slightly homely example caught my eyes. Dual, variable 24 VDC supplies @ 2.5 amps. A little less oompf than I was hoping for, but the price made up for that -- 15 smackers.

The guy who sold it to me said it worked fine -- the only issue was that the mounting bezels for the two meters were... well... not present. I figured a little double-stick tape could provide a simple if not terribly elegant solution... so home with me it came.

Finally got 'round to smoke testing it today. It definitely works -- next step, of course, take a look at the output on a 'scope (or just hook something to it and see how quiet it is -- or isn't).

To paraphrase Crocodile Dundee




View attachment 13248



DSC_4595 (2) by Mark Hardy, on Flickr

🤭
No kidding...
 
Yes, that's a power supply )
Now let the cat out of the bag, do tell what you plan to use it for?
 
That is a custom crafted amp stand, too, buddy!

:)

I've been thinking about installing an audiophile fuse in that EV Game P/S -- whaddya think?
 
I went to NEAR-Fest (Home - NEAR-Fest.com ) last weekend with a mission. My mission (which I chose to accept ;) ) -- to find a decent-quality, fairly robust DC linear power supply, ideally a cheap one.

Well... there was no dearth of power supplies of all shapes and sizes. One vendor had a whole stack of very decent looking ex-lab DC power supplies at what looked like reasonable prices. One slightly homely example caught my eyes. Dual, variable 24 VDC supplies @ 2.5 amps. A little less oompf than I was hoping for, but the price made up for that -- 15 smackers.

The guy who sold it to me said it worked fine -- the only issue was that the mounting bezels for the two meters were... well... not present. I figured a little double-stick tape could provide a simple if not terribly elegant solution... so home with me it came.

Finally got 'round to smoke testing it today. It definitely works -- next step, of course, take a look at the output on a 'scope (or just hook something to it and see how quiet it is -- or isn't).

To paraphrase Crocodile Dundee




View attachment 13248



DSC_4595 (2) by Mark Hardy, on Flickr

🤭

As an aside, the Lounge doesn't benefit from an upgraded power supply, as it had a linear one built in.

Just in case that was among your planned experiments.
 
As an aside, the Lounge doesn't benefit from an upgraded power supply, as it had a linear one built in.

Just in case that was among your planned experiments.
I actually remembered that, sir!
But I appreciate the reminder.

Actually, there's this thing that I acquired a couple of weeks ago (barely worth describing, at least at this point) that needs power -- but it, too, is looking for 12VAC.

I do have 12VAC available on a Heathkit IP-17 HV DC P/S, come to think of it...
The nice folks at Heathkit provided 6.3/12.6 VAC on the front panel to power filaments.

:)


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borrowed image
 
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