General > General Technical Chat
Show your favorite and most used benchtop PSU
electrolux:
--- Quote from: BravoV on December 09, 2012, 05:26:05 pm ---While doing minor cleaning & housekeeping on my bench table, when I was arranging things & moving stuffs around, was a bit struggled when I lifted my favorite and mostly used bench psu which it's weight about 14 Kg / 31 lbs :phew:, then suddenly remembered that this forum has no bench psu thread like the popular one "Show your Multimeter!" thread, took snapshots and here we are.
If you have more than one or too many like Dave does >:D, just post one or two that you "mostly used" when you're tinkering with electronic projects/circuits. Presumably its is adjustable type, and diy type is also welcome. :-+
Please, post & share the photo of yours, and your own comment about it as well.
Let me start mine, a 36 volt 10 Amps Japanese linear bench psu Kenwood PD36-10AD (Link), probably made around late 80s or early 90s.
Like :
- The auto emergency shutdown feature (crowbar ?), if the voltage rail crossed the adjustable OVP limit, the power switch will snap mechanically to off position instantly. :-+
- Very low over shoot in CC mode when turning ON the output, it won't toast a led like the example attached photo below, really love this particular feature. Remember, this is a 10 Amps capable beast.
Dislike :
- Its so damn heavy and did I say its expensive ? :'( ... looking at the back of my shoulder just in case wifey is peeking :-DD
- Although its working perfectly fine, but still feeling uncomfortable cause there is no service manual available like those cool & great HP (Agilent) bench PSU series. :--
Front & rear shots, the rear has all those terminals for many features like parallel/series connection, remote sensing, external reference (volt or resistance) for voltage and current loop, remote output on/off and etc.
Now, your turn.
.
PS : Please, resize the photo like 1024 or max 1280 pixels wide, not the raw huuuge sized photo directly from your camera. Also its highly recommended to use the attachment feature to embed photo in your own post like I did here, rather than using external hosting, why ? A nasty example on the 1st post, image at external hosting simply sucks -> HERE
The attach picture feature is right below the dialog box where you type your post.
--- End quote ---
Ain't got one.
IO390:
Here's mine. A Thurlby PL320 with the K2 module. Nothing special but it's mine and I love it :)
My dad gave me this a while ago before I got into electronics properly. I didn't realise that PSUs are pretty expensive so I almost gave it away at one point. Glad i didn't though.
The right hand side is adjustable to 2.2A at 32V. The left has two outputs. One 0-30V 1A output that can either be independently adjusted or set to track the main output. Then there's a 7A output on the far left that's adjustable between 4-6V.
There's a date inside reading March 1984, so it's 30 last month! Works perfectly though and I recently calibrated the displays and it's absolutely spot on. And yes, it has those really "heavy" feeling pots.
No fan and doesn't get very hot either.
madshaman:
--- Quote from: IO390 on April 22, 2014, 03:12:46 pm ---Here's mine. A Thurlby PL320 with the K2 module. Nothing special but it's mine and I love it :)
My dad gave me this a while ago before I got into electronics properly. I didn't realise that PSUs are pretty expensive so I almost gave it away at one point. Glad i didn't though.
The right hand side is adjustable to 2.2A at 32V. The left has two outputs. One 0-30V 1A output that can either be independently adjusted or set to track the main output. Then there's a 7A output on the far left that's adjustable between 4-6V.
There's a date inside reading March 1984, so it's 30 last month! Works perfectly though and I recently calibrated the displays and it's absolutely spot on. And yes, it has those really "heavy" feeling pots.
No fan and doesn't get very hot either.
--- End quote ---
That's a nice one, you have a very good dad.
TheAmmoniacal:
I guess this post will become a little plug for an obscure new Chinese company. I have this small and portable variable DC power supply that I got off aliexpress maybe a year ago, it's named Gopher CPS-3205L (32V @ 5 A). I only paid $65 with shipping, but even after a year I haven't considered getting a better one. It's great. As you can see on the pictures it only has one knob and a switch, a switch to set the voltage or amps, and a knob that you can push to select digit and turn to adjust. The specifiations can be found here: http://gophertc.com/en/cps-3205
Here's some pictures:
On the first picture, it's set to 13.37 V, my cheap ass Vichy read 13.37 V. Overall very accurate.
On the second picture it's set to 13V, the multimeter reads 12.58 V across the 33 ohm resistor. The resistor reads 32.9 ohm, there's 12.58 V across, 12.58/32.9 = 328 mA (as shown on the current reading on the PSU). This current reading can be off at low values I've noticed though.
The third and forth picture is the inside, nothing special, just plain and simple cheap PSU. But it seems very well done, no bodging, no bad solder joints, good layout. What do you think?
The rest are just bodged macro-shot attempts with an improvised extension tube.
I think it's very good and cheap for a beginner, and it doesn't take much space on your desk either. I'd love to know what you people think about it.
johnmx:
My favorite power supply!
Specs:
* Dual isolated channel
* 20V@3A maximum per channel
* Constant voltage and constant current modes
* User maximum setpoints for safety
* Operating Modes: Isolated, Series, Tracking and Parallel
* Output power indication
* LCD with touch screen
* 4 User memories with custom names defined by user
* User setpoints controlled by touch or rotary encoder
* USB Monitoring/control (Isolated)
* Rotary encoder: exponential acceleration algorithm for perfect user experience 8)
* Single toroidal power transformer for minimum size and weight
* Passive cooling (no noise)
* Size: 23x10x20 cm
* Weight: 3.4 kg
Don’t ask me where I bought it, because it’s the only specimen in the universe! O0
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