Just received old-new PSU. It hasn’t a lot of power, but it’s pretty precise.
The characteristics:
https://www.keysight.com/us/en/product/6612C/40-watt-system-power-supply-20v-2a.html
Also it has some interfaces like RS-232 so it can be controlled via PC. Also it allows to connect load via 4 wire method to more precise measurement.
Package:
LOL:
Some quick testing. I don’t have short wires for multimeter so I’m unable to use 4 wires connection and some of the measurements could be more precise. But anyway it’s in range.
Voltage:
102 millivolts — 400 microvolts difference.
12.184 volts — 2 millivolts difference
Current:
15 milliamp setting.
165 milliamp setting.
Looks cool, it’s pretty precise, let’s clear it a bit 🙂
Some additional quick tests: