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Schematic for Electrolysis Device
@12AX7 - quite true, SCRs and triacs don't want to move in a hurry, have relatively high "on" voltag ... |
3-3-2010 at 05:11
by: densest |
Schematic for Electrolysis Device
@watson.fawkes - yes, I confused "safety" with "basic" insulation requirements: I think 1.6mm is eno ... |
2-3-2010 at 23:11
by: densest |
Schematic for Electrolysis Device
The amazing1 transformers are not what you want. You want "gate drive" or "SCR/thyristor trigger" tr ... |
2-3-2010 at 15:37
by: densest |
Preparation of elemental phosphorus
@strepa - Your careful description of your experiment is a model of clarity - congratulations!
If ... |
1-3-2010 at 18:38
by: densest |
NH3, H2SO4, and HNO3 from fertilizer
[quote]
The wire would have to sealed into the stopper to be dependable, and that would call for gl ... |
28-2-2010 at 19:04
by: densest |
The lead salts preparation thread!
Cd is used to color glass - some "crayon" yellows,reds, and oranges. |
24-2-2010 at 16:36
by: densest |
what is the deal with cheap glassware on ebay?
My experience with bomex has been universally bad. It doesn't bounce nearly as well as Pyrex or Kima ... |
24-2-2010 at 09:54
by: densest |
Schematic for Electrolysis Device
I've got a couple of questions: one is electrochemical, one for the users of these power supplies.
... |
22-2-2010 at 12:09
by: densest |
Isolation of KNO3 from Urine
Somewhere on this site is a posting containing reports of experiments in France just prior to the in ... |
7-2-2010 at 15:30
by: densest |
Schematic for Electrolysis Device
Yes, woelen's design is very nice indeed.
A "quick and dirty" approach I have used is to salvage ... |
7-2-2010 at 13:55
by: densest |
Preparation of elemental phosphorus
@blogfast25 - depending on where one buys it, Calgon(tm) may contain no phosphorous  - some other ... |
7-2-2010 at 09:35
by: densest |
Silver purification
Electrolysis is a very easy way to get crystals of pure-ish (>99%, 99.9% if you're careful) silve ... |
6-2-2010 at 22:17
by: densest |
Hydrazine
[rquote=171298&tid=1128&author=Myfanwy]i wouldnt have asked, if i had any books about hydraz ... |
6-2-2010 at 22:02
by: densest |
Simple Question -- Obtaining Pyrotechnic Supplies
[rquote=171158&tid=13346&author=Rich_Insane]Wow, I used to think that the Energetics/Pyrotec ... |
6-2-2010 at 21:15
by: densest |
Simple Question -- Obtaining Pyrotechnic Supplies
Charcoal is sometimes classified as "spontaneously igniting" which adds a hazmat fee (insert huge ap ... |
4-2-2010 at 18:45
by: densest |
My new Kiln
[rquote=170989&tid=13345&author=bquirky]
I have been using gas flame to date but its just ... |
4-2-2010 at 18:33
by: densest |
Rare earth metals, mischmetal, etc
Would Fe(CN)6 be useful for precipitating iron from a mixed solution of Fe & lanthanides? I have ... |
4-2-2010 at 14:37
by: densest |
The short questions thread (2)
Perhaps this should be under "Acquisition"... if so, I'll redirect this.
Is P2O5 (phosphorous pen ... |
4-2-2010 at 14:14
by: densest |
Ethanol from Newspaper
Have you considered how much of the price of ethanol is tax? In many countries, concentrated ethanol ... |
4-2-2010 at 14:03
by: densest |
Glass for homemade pH electrode
US Patent 4297193 - pH Electrode glass compositions has some useful (?) information about glass for ... |
4-2-2010 at 13:46
by: densest |
Low-Pressure Gas @ home
I'd add my vote to avoid storage & tanks. A compressor suitable to put anything even slightly re ... |
28-1-2010 at 17:34
by: densest |
Glacial Acetic Acid synthesis wo sulfuric
The CuSO4 I've seen in hardware stores [i]definitely[/i] needs to be recrystallized before use as a ... |
14-1-2010 at 16:33
by: densest |
Anyone good at glass work?
Very important to remember: do not mix glass types with different coefficients of expansion (COE)!! ... |
13-1-2010 at 09:45
by: densest |
capacitor discharge
A couple of notes: Mitsubishi published a "how to use our IGBTs" document "powermos4_0.pdf" which ha ... |
12-1-2010 at 17:39
by: densest |
Anyone good at glass work?
"Glassblowing An Introduction to Artistic and Scientific Flameworking", Edward Carberry, ISBN 1-8888 ... |
10-1-2010 at 16:23
by: densest |
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