Hi Andreas,
I know, but the noise that you see, is already a fair proportion of the variation of the other measurements, but correct me, if you think it is different.
Hi Shahriar,
The temperature in my LAB depends on my emotional state ...
Normally, the temperature is between 19 and 23C in my LAB.
For my 2x TEK DMM4050 and 2x KEYSIGHT 34461A DMMs I want to make a small box that is temperature controlled.
It wil have a number of Peltier elements to keep the temperature around DMMs fairly stable.
I want to start with the air supply at about 21C, and then measuring with multiple temperature sensors in and outside the multimeters how well the temperature remains stable. This is a project for the coming months.
Again, the schematic that I showed in this topic, is a good reference if you build him well.
The next reference that I'm going to build, contains eight pieces LM399AH, and I will build one, with eight pieces LT1021-5V.
Both reference will be built in an oven, around 42C.
At the moment I test fourteen pieces LT1021-5V, to select out the LT1021 with the largest deviation.
Kind regarts,
Blackdog