Today some tinkering. I have a little collection of some wet tantalums sitting on my shelf for some time
which I wanted to measure the leakage current. I want to use them in another project (measure amplifier
to measure the noise of some voltage sources, in my case the LTFLU-1).
I had the idea to built a little thing with 10 12V batteries in it so I can have different voltages in 12V steps.
I added a 1kOhm and a 1MOhm between the ground and the DUT (capacitor) which I can select with a jumper.
1kOhm setting is equal to 1µA at 1mV; 1MOhm setting 1nA at 1mV.
Since 5 hours or so I'm running this setup with two caps (1kOhm setting) and one cap is now nearly 100nA
the other one is around 370nA.
My tantalums have a capacity from 680µF to 1300µF (Voltage 30 - 60V)
and the date codes are starting around 1962 and go up to 1973.
Here are some pictures (as I know you guys love pictures
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
)
Background music today: Classic Rock hits of the 70s and 80s.
My little collection (2 caps missing because they are in the testing setup)
![](https://i.imgur.com/TWkkmef.jpg)
126.5V - do NOT lick!
![](https://i.imgur.com/jFMXfmd.jpg)
PCB assembled:
![](https://i.imgur.com/4XbUsGg.jpg)
the usual suspects under test, answering questions:
![](https://i.imgur.com/ow0d1rm.jpg)
Answers:
![](https://i.imgur.com/EP1LVRC.jpg)
The e-function at work:
![](https://i.imgur.com/Y9Hd356.png)
So, and now I'm looking for a nice glas of an 18yo Highland Park.
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)