Ferrite filter question

Started by Anonymous in sci.electronics.basics3 months ago 4 replies

Reecently I helped a neighbor connect a Chinese made CNC plasma table to an American made plasma cutter. After I figured out that the "partial...

Reecently I helped a neighbor connect a Chinese made CNC plasma table to an American made plasma cutter. After I figured out that the "partial pressure" the Chinese manual mentioned was in reference to a built in jumper selectable voltage divider I was able to get the two machines talking to each other and everything works now. But the Chinese manual shows a filter on a sense wire and I don...


Soldering kit

Started by Andy in sci.electronics.basics3 months ago 18 replies

I have been soldering for a lot of years, but all I had was a single 30W temp iron and no desolder gun. My new kit will have adjustable heat...

I have been soldering for a lot of years, but all I had was a single 30W temp iron and no desolder gun. My new kit will have adjustable heat and a desoldering gun. That will be nice as it's been a bear trying to wick up solder and sling it away. I have been using my bench grinder brush to clean my tips. My current tip is at least a year old, but still heats great. What do you use ? ...


Can someone translate this ? Russian to English

Started by gm in sci.electronics.basics3 months ago 11 replies

Hi to all. College of mine bought some Chinese motor controller but i can get any addition infos on Chinese site. Luckily i found that someone...

Hi to all. College of mine bought some Chinese motor controller but i can get any addition infos on Chinese site. Luckily i found that someone in Russia is using the same controller and he has wrote how to connect, but it in Russian language. Can someone please translate this ? https://ibb.co/i6zZ6w Thank you in advance !


Tax Advisors |Accounting Services | Zoho Setup in Hyderabad.

Started by Ratalu challagolla in sci.electronics.basics3 months ago

WE ARE INCOME TAX ADVISORY SPECIALISTS Year-round planning is the key to preserving your bottom line. We are your complete Tax Advisory and...

WE ARE INCOME TAX ADVISORY SPECIALISTS Year-round planning is the key to preserving your bottom line. We are your complete Tax Advisory and planning resource. Minimizing your tax liability is our main objective and that begins with consistent planning. Our accountants will assess your current situation and implement tax saving strategies to guarantee you’re taking full advantage


Looking for a good way to compare CR2450 batteries

Started by Anonymous in sci.electronics.basics3 months ago 7 replies

I use enough CR2450 coin cells in equipment in my shop that I think it makes sense to test a few brands against each other to see which is most...

I use enough CR2450 coin cells in equipment in my shop that I think it makes sense to test a few brands against each other to see which is most economical. I don't know enough about how to load different battery chemistries to test the batteries. But I was thinking about just using an LED and a resistor combination so that the battery would drain to some particular voltage in about a month. ...


dying trees

Started by Jasen Betts in sci.electronics.basics3 months ago 19 replies

As is seasonally traditional, we recently had a dying tree in our house the tree had no roots, the base of the trunk sat in a vesel of...

As is seasonally traditional, we recently had a dying tree in our house the tree had no roots, the base of the trunk sat in a vesel of water, and if the water is not kept topped up the tree dies before the end of festivities. So I decided to instrument the plastic vessel to confirm water level, I placed with a couple of strips of copper tape where they are unobtrusive wired up an NE555...


CES 2018: An underwear to protect your private parts from radiation

Started by Mr. Man-wai Chang in sci.electronics.basics3 months ago 5 replies

CES 2018: An underwear to protect your private parts from radiation Full story: How often have you felt the need to stay safe from cell...

CES 2018: An underwear to protect your private parts from radiation Full story: How often have you felt the need to stay safe from cell phone radiation? Every once in a while, someone on the Internet comes up with the topic of cell phone radiation and its


Bifilar inductor?

Started by George Herold in sci.electronics.basics3 months ago 27 replies

Hi all, silly question. Dave's EEVblog was on... there was this bifilar wound coil (starts at ~39 minutes in) https://www.eevblog.com/ (hmm...

Hi all, silly question. Dave's EEVblog was on... there was this bifilar wound coil (starts at ~39 minutes in) https://www.eevblog.com/ (hmm latest video I guess, Mailbag #1049) My question is; how the heck does that do anything inductive? George H.


$0.79 Clip On LED Light for Phone Batteries

Started by Bret Cahill in sci.electronics.basics3 months ago

I have a collection of batteries I find cycling. Yesterday it was a Galaxy Note 4. You don't have to cycle thousands of km to find a mangled PDA...

I have a collection of batteries I find cycling. Yesterday it was a Galaxy Note 4. You don't have to cycle thousands of km to find a mangled PDA with the dislodged battery nearby. They leave the phone on the roof to load something into the car which requires both hands. The phone must absorb most of the 120 km/hr oblique impact because more often than not, the dinged battery is


Li-ion battery degrade?

Started by Bob Engelhardt in sci.electronics.basics4 months ago 8 replies

I was measuring torque required to drive various drill bits and incidentally found that my cordless drill was delivering way less torque than...

I was measuring torque required to drive various drill bits and incidentally found that my cordless drill was delivering way less torque than it was spec'd for. 80in-lbs measured vs 250 spec'd. If this wasn't a Milwaukee drill, I would have dismissed it as a spooky torque spec. But 80 vs 250 for a Milwaukee doesn't figure. The thought that came to me was maybe the battery couldn't de...


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