开云体育

Just received mine a week ago.? From the order to receipt took 8 days. The shipping is fast all things considered. It shipped a few days after order. I received a notice via email when it was

A better way is to use an SLA printer to UV expose a sensitized PCB (or coated with a UV sensitive dry film like Dupont Riston). https://github.com/borelg/PhotonPCB

Hi Zvi, what is PotH ???? If you wired the? audio cables from the USB sound card to the Mic and PotH ports, are you still able to plug a mic in without unplugging the USB sound to use a mic on the

OMG! Don't mix things with bleach! Bleach is not an acid but a strong base, containing 3-8% sodium hypochlorite.? Do not mix it with any acid, or pretty much any household chemical!? Bleach can then

https://nypost.com/2020/11/06/top-nyc-doc-says-ventilators-were-overused-during-peak-of-covid-19/

From the description given, the concern might have been something called “breath stacking”; but the solution to this is a smarter person controlling the ventilator settings. There are some

OK, but I’m giving you my professional opinion that they’re screwed up.

That's what they said. I'm not here to confirm nor deny the validity of what they said. Vince.

Hi Jim, I'll re=ad that label maybe tomorrow. I have been told since I was a kid is hydrochloric acid. Next I will read the label on my van to see that it actually contains Chrysler parts <blink>.

Vince, I think there’s a few technical details missing in that description. Patients going on the ventilator certainly did not do well. But it may be for reasons that have little to do with the

Because the ventilator project was formed from people in this group. Because some consider this important and interesting. And perhaps because the moderator is an active participant in the discussion.

Hydrogen peroxide is not an accelerant, it’s an oxidizer. Most acids, including hydro-chloric and acetic (vinegar) will not dissolve copper on their own, they need an oxidizer too. Nitric acid will

Why isn’t this thread locked?

Last year when everyone was screaming they need ventilators a number of doctors and nurses were saying the ventilators were killing people. They only push the air in and the patient wasn't able to

Could be. I don’t know.

I used to work in the design division of an electromedical company in the early 70's. We had 4 engineers and 3 techs. I was a tech. One of my jobs there was to layout and print prototype pcb boards

Clorox bleach does NOT contain Hydrochloric acid. I suggest you read the ingredients label before making a statement like that. The main ingredients in regular Clorox bleach are Sodium Hypochlorite

Perhaps a warm climate, life lived outdoors or in extremely well ventilated buildings? Studies first started showing up about a year ago showing that Covid19 transmission was primarily airborne, and

Hi, Clorox and other brands of chlorine bleach are hydrochloric acid. I am going try that. I have also etched metal in apple cider vinegar to remove rust. 73, Bill KU8H bark less - wag more

I wonder how feasible this is? https://hackaday.com/2021/04/26/indian-makers-respond-to-the-covid-19-pandemic-by-producing-oxygen-concentrators/ -- www.bitxmap.com ( http://www.bitxmap.com )