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Oxalate from formate?
I noticed something interesting on Wikipedia:
[url=https://en.wikipedia.org/wiki/Sodium_formate#ci ... |
28-11-2018 at 07:49
by: Fulmen |
Stability and precision of Hall-based current sensors?
I have to say this has been an eye opener when it comes to instrumentation. I am going to give the i ... |
24-11-2018 at 10:43
by: Fulmen |
Stability and precision of Hall-based current sensors?
Thanks. It might come in handy for future projects, but I won't use any time on it for this project. ... |
24-11-2018 at 00:48
by: Fulmen |
Stability and precision of Hall-based current sensors?
Whoa, easy there. That's way out of my league for now, this is my first real attempt at this and I a ... |
23-11-2018 at 12:32
by: Fulmen |
Stability and precision of Hall-based current sensors?
Right now I'm using the Duemilanove: https://www.arduino.cc/en/Main/ArduinoBoardDuemilanove
But I ... |
23-11-2018 at 10:49
by: Fulmen |
Stability and precision of Hall-based current sensors?
Agreed. As long as I don't burn the board I couldn't care less about the power consumption for this ... |
23-11-2018 at 06:20
by: Fulmen |
Stability and precision of Hall-based current sensors?
What is the best approach for timing the sampling? Perhaps a "while" or "do while" loop?
Would t ... |
22-11-2018 at 22:57
by: Fulmen |
Stability and precision of Hall-based current sensors?
WGTR: You certainly know more than me about ct's. But that's part of my reasoning for making one, it ... |
18-11-2018 at 03:32
by: Fulmen |
Stability and precision of Hall-based current sensors?
[rquote=553538&tid=103892&author=Twospoons]Not hard, just unbelievably tedious to do by hand ... |
17-11-2018 at 12:02
by: Fulmen |
Arduino power meter (was: Stability of Hall-based...)
I also changed A1 to A0, reading the voltage twice until I get a ct. Here's the resulting data:
... |
17-11-2018 at 04:49
by: Fulmen |
Stability and precision of Hall-based current sensors?
[rquote=553538&tid=103892&author=Twospoons]If not then something is out of wack.[/rquote]
... |
17-11-2018 at 04:19
by: Fulmen |
Stability and precision of Hall-based current sensors?
Progress so far: I want to do a "feasibility-test" before ordering components, so I have started wit ... |
16-11-2018 at 12:10
by: Fulmen |
Stability and precision of Hall-based current sensors?
Twospoons: I did glance at Rogowski-coils, and while they look simple enough in theory I expect it w ... |
15-11-2018 at 06:40
by: Fulmen |
Stability and precision of Hall-based current sensors?
David: You make a good point. Using the bias circuit I can use the internal ADC, 10bit should be acc ... |
13-11-2018 at 23:21
by: Fulmen |
Stability and precision of Hall-based current sensors?
David: That's exactly what I'm planning. The ADC has a max sample rate of 860sps, should be enough t ... |
13-11-2018 at 15:55
by: Fulmen |
Stability and precision of Hall-based current sensors?
Not really. A bit too advanced for me now, besides I have other uses for these components so the Ard ... |
13-11-2018 at 14:52
by: Fulmen |
Stability and precision of Hall-based current sensors?
I could go for something like this (the current transformer would get a similar bias):
[file]7173 ... |
13-11-2018 at 13:41
by: Fulmen |
Stability and precision of Hall-based current sensors?
Looks like Hall-sensors are out. I like the sensor you linked to, but these are cheaper and easier t ... |
12-11-2018 at 23:32
by: Fulmen |
Stability and precision of Hall-based current sensors?
I'm planning a little Arduino-project, building a data-logger for measuring efficiency of a heat pum ... |
12-11-2018 at 13:52
by: Fulmen |
Check out this video on melting lead - is this "dross" or oxide?
Iirc the bark is usually rich in silicates, I suspect it's part of it's fire resistance. |
5-11-2018 at 10:20
by: Fulmen |
Check out this video on melting lead - is this "dross" or oxide?
Wax does separate dross from the metal quite effectively. The oxides sticks to the metal, allowing q ... |
3-11-2018 at 07:22
by: Fulmen |
Why can't chemists make a consensus about water's pka???
https://chem.libretexts.org/Textbook_Maps/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry) ... |
1-11-2018 at 12:33
by: Fulmen |
Calculating solution composition from density?
[rquote=547851&tid=100636&author=unionised]
You can't[/rquote]
Are you [i]absolutely[/i] s ... |
29-10-2018 at 12:18
by: Fulmen |
Production of pharmaceutical grade (USP, EP, BP, JP) compounds
OK, you're probably right. I remember we did an optical rotation test on finished product. IIRC it h ... |
22-10-2018 at 09:27
by: Fulmen |
Production of pharmaceutical grade (USP, EP, BP, JP) compounds
[rquote=545406&tid=98867&author=macckone]The specifications are for the final product, not t ... |
22-10-2018 at 08:02
by: Fulmen |
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