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Inductor and capacitor for rectifier output filter
[rquote=691093&tid=160171&author=yobbo II]

Why is there such variation in the value of H. ...
22-2-2024 at 13:22
by: Twospoons
Lithium thionylchloride battery salvage
[rquote=691027&tid=160178&author=Sulaiman]
It is now imperative that you develop and publis ...
19-2-2024 at 13:50
by: Twospoons
Lithium thionylchloride battery salvage
I have access to a large number of dead LiSOCl[sub]2[/sub] AA cells - over 50 of them, and I'm tryin ...
18-2-2024 at 16:56
by: Twospoons
Inductor and capacitor for rectifier output filter
[rquote=691001&tid=160171&author=semiconductive]
Note: Spice simulator is *horrible* at si ...
18-2-2024 at 14:45
by: Twospoons
Inductor and capacitor for rectifier output filter
http://sim.okawa-denshi.jp/en/RLCtool.php
https://www.analog.com/en/resources/design-tools-and-calc ...
16-2-2024 at 21:47
by: Twospoons
Inductor and capacitor for rectifier output filter
Before we can answer your question we need to know how much current you want to supply, and how much ...
16-2-2024 at 15:41
by: Twospoons
How hazardous is fluorine chemistry?
Pickling paste for stainless steel welding contains up to 5% HF. I wonder how many welders know just ...
14-2-2024 at 16:29
by: Twospoons
Eutectic salts for heating bath alternative
T=132 C at NaCl-KCl-AlCl3 mole fraction of 36%-14%-50%.
T=91 C at NaCl-KCl-AlCl3 mole fraction of 2 ...
3-2-2024 at 14:58
by: Twospoons
Eutectic salts for heating bath alternative
[url=https://www.energy.gov/eere/solar/articles/halide-and-oxy-halide-eutectic-systems-high-performa ...
2-2-2024 at 15:30
by: Twospoons
Vacuum valve suggestions required
Needle valves are commonly used for gas and vacuum work. Aliexpress is full of them (at modest price ...
29-1-2024 at 00:13
by: Twospoons
The Action Lab video about negative Kelvin temperature violates laws of thermodynamics ?
Its not really true you can achieve 'any temperature you want'. Focusing a laser beam using a lens h ...
25-1-2024 at 13:03
by: Twospoons
Multiple bad experiences with AliExpress
Just want to add the one thing I'd never buy from Aliexpress is power semiconductors. Its too easy t ...
21-1-2024 at 14:31
by: Twospoons
Multiple bad experiences with AliExpress
Aliexpress can be rather hit and miss. I've had good stuff and bad. Mostly it comes down to vetting ...
21-1-2024 at 13:53
by: Twospoons
Titanium dioxide
How about making a Ti[sub]4[/sub]O[sub]7[/sub] electrode by partial reduction using C, H[sub]2[/sub] ...
6-1-2024 at 12:44
by: Twospoons
Inorganic synthesis using Co2 laser.
HeNe is usually only a few mW, up to maybe 50mW. I have a couple of 2mW HeNe lasers. Being visible, ...
28-12-2023 at 20:37
by: Twospoons
Inorganic synthesis using Co2 laser.
I get the odd sense you are unfamiliar in working with lasers. Take extra care, check everything twi ...
28-12-2023 at 13:38
by: Twospoons
Inorganic synthesis using Co2 laser.
Quartz will not pass IR from a CO2 laser. Few materials are sufficiently transparent at 10.4um for C ...
26-12-2023 at 12:41
by: Twospoons
Inorganic synthesis using Co2 laser.
I suppose its worth mentioning laser safety to casual passers by- especially with IR lasers (no blin ...
25-12-2023 at 13:35
by: Twospoons
Do you need an FEL to produce energetics?
I personally have no interest in energetics (I like having fingers), but if I did then it would make ...
18-12-2023 at 18:18
by: Twospoons
Step down adjustable buck converter for electrolysis
[rquote=689243&tid=81769&author=yobbo II]

Thanks TwoSpoons but

I put a design into the ...
6-12-2023 at 13:35
by: Twospoons
Small scale production of H2SO4 in the amateur lab
I stumbled across this patent https://patents.google.com/patent/US20040234441A1/en describing the co ...
5-12-2023 at 14:08
by: Twospoons
Step down adjustable buck converter for electrolysis
For anyone wanting to 'roll-your-own' power supply, Texas Instruments have an online tool called We ...
4-12-2023 at 12:13
by: Twospoons
Controlled destruction of phenolic adhesive - advice?
Ah, yes, well we obviously work in very different industries. My issue involves a magnetic card rea ...
29-11-2023 at 16:38
by: Twospoons
Controlled destruction of phenolic adhesive - advice?
Worth a try. It certainly works for tinning Litz wire - dipping the wire in NaOH soln then heating w ...
28-11-2023 at 17:00
by: Twospoons
Controlled destruction of phenolic adhesive - advice?
We're aware of the limitations of flex pcb and try to adhere to the IPC standards for bend radius .. ...
27-11-2023 at 18:10
by: Twospoons
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