I love my R&S NGT20, I have several of them.
Reasonably clean, analog, uA741 technology, no switcher, knobs for
everything.
3 independent, unconnected outputs:
2* 0-20V@1A for op amps etc
1*0-6V@5A for the digital stuff
for example:
<
https://www.ebay.de/itm/Rohde-Schwarz-DC-Power-Supply-Stromversorgungsgerat-Typ-NGT-20/193258127587?hash=item2cff1500e3:g:v6wAAOSwlnVd9j7J
>
I have measured some of the devices I have here to see how much there
was to filter for my analog toys:
<
http://www.hoffmann-hochfrequenz.de/downloads/Noise_Measurements_On_Some_Laboratory_Power_Supplies.pdf
>
For the NGT20 that was not much.
The HP6633B: OMG!!!
Cheers, Gerhard
Am 01.05.20 um 20:51 schrieb jimlux:
What with telework, I'm doing more timenuts-ey stuff at home, and the
power supply conundrum has come up.
There's a plethora of interesting widgets scattered across my bench
requiring variously, 5V, 8V, 12V, and 15V.
I've got a box full of various fixed voltage supplies, mostly linear,
picked up over the years.
I suppose I can package a bunch of those up in a bigger box with
banana jacks or binding posts.
And then there's some things where you'd like current limiting and/or
variable voltage.
So I've started looking at inexpensive bench power supplies - there
appear to be dozens, if not hundreds, of these available. There must
be dozens that are all very similar - They're switchers for the most
part, displays, etc. for $50-100, from different vendors, all similar.
Are they essentially commodity? Or are there particular brands that
are good or bad?
Are they all noisy?
Weird UI problems (7 menu layers with a single knob)?
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