Blow Your Mind - You are using your canopener wrong

Started by Steve Wilson in sci.electronics.design2 hours ago 51 replies

It seems that most of us hold the can opener perpendicular (vertical) to the can. But as you’ll see in the video below, that is the wrong...

It seems that most of us hold the can opener perpendicular (vertical) to the can. But as you’ll see in the video below, that is the wrong method. http://www.youtube.com/watch?v=mFmllVIZrQs That looks a lot cleaner. It also grabs the lid and eliminates potential cuts trying to remove the lid. There are can openers with magnets to grab the lid, but they are messy and stil


Vintage equipment voltage measurement

Started by Cursitor Doom in sci.electronics.design2 hours ago 57 replies

Gentlemen, One of the drawbacks of attempting to fix vintage stuff is the expected voltage readings given in the service manuals of the day....

Gentlemen, One of the drawbacks of attempting to fix vintage stuff is the expected voltage readings given in the service manuals of the day. The manuals usually state that the readings given were measured with analogue VMs of a certain ohms-per-volt rating - most commonly IME 20k. Consequently if you measure with a modern DVM with stupendously high Zin you're screwed and will get unr...


Monkey Brains

Started by John Larkin in sci.electronics.design2 hours ago 7 replies

We're moving into our newish building and there is no good internet access here without digging up sidewalks. So we signed up...

We're moving into our newish building and there is no good internet access here without digging up sidewalks. So we signed up with MonkeyBrains. They put a dish on the roof, and luckily we are line-of-sight to one of their places. https://www.dropbox.com/s/d8hjlm1pktyetfi/Monkey_Dish.JPG?raw=1 https://www.dropbox.com/s/t26b435y76nm9ce/Monkey_Brains.jpg?raw=1 370 mbps is some radi...


Searching for line encoding NAME (not Manchester)

Started by Warren in sci.electronics.design2 hours ago 22 replies

I have been searching for the name of a line encoding scheme, which never gets mentioned in articles pertaining to other encoding techniques. I...

I have been searching for the name of a line encoding scheme, which never gets mentioned in articles pertaining to other encoding techniques. I first saw its use and description in Byte magazine, eons ago. IIRC, it was then incorrectly given a modified Manchester moniker. The encoding scheme I am interested in is not bandwidth frugal but uses a simple ratio of low time to high ti


Exceeding ceramic capacitor rated voltage.

Started by Winfield Hill in sci.electronics.design3 hours ago 6 replies

What do you think will happen if the data-sheet's rated voltage for a ceramic capacitor is exceeded? E.g., Kemet C0805C105J4RAC, an 0805 X7R...

What do you think will happen if the data-sheet's rated voltage for a ceramic capacitor is exceeded? E.g., Kemet C0805C105J4RAC, an 0805 X7R 1.0uF 16V type; could see 18.6V from a solar-cell panel. -- Thanks, - Win


Shopping for low C PFET

Started by George Herold in sci.electronics.design4 hours ago 15 replies

Hi All, well one last swing at my HV reset spad circuit. (circuit scribble or spice file on request.) I need a low input C, P-fet with...

Hi All, well one last swing at my HV reset spad circuit. (circuit scribble or spice file on request.) I need a low input C, P-fet with decent Vds (~40V or greater.)* (It needs to turn off fast (


Hot Spots and Acceleration of Global Warming

Started by Anonymous in sci.electronics.design6 hours ago 63 replies

The most recent new highs in temperature extremes are NOT the new normal, they are a transition point of a climate on its way to becoming an...

The most recent new highs in temperature extremes are NOT the new normal, they are a transition point of a climate on its way to becoming an uninhabitable hell on Earth. There is no rate, there is an acceleration component, rate of warming increase is not constant, and we're nowhere near the maximum acceleration already set in motion and which cannot be undone, especially by stupid


Digital Multimeters

Started by dcas...@krl.org in sci.electronics.design8 hours ago 108 replies

What do you lke and why. Decided to buy another multimeter so I will have one handy whether I am in the basement or some where else and...

What do you lke and why. Decided to buy another multimeter so I will have one handy whether I am in the basement or some where else and looked at what is available on Aliexpress. Lots of choices. Counts run from 2000 , 4000, 6000, 10000 , 20000 and even 40000. Does anyone really find much use for more than the 3 1/2 digit or 2000 count meter? For use in the garage, 2000


Low end 'scopes

Started by George Herold in sci.electronics.design9 hours ago 36 replies

So a Keysight rep came by and saw we were using all this (rather crappy) TEK low end 'scopes. We've got one of their loaners to play with, and...

So a Keysight rep came by and saw we were using all this (rather crappy) TEK low end 'scopes. We've got one of their loaners to play with, and I like it! 'scope is here, https://www.keysight.com/en/pcx-2759552/infiniivision-1000-x-series-oscilloscopes?nid=-32110.0&c c=US&lc=eng Various features I like. 1.) It does a nice x-y plot. (though you have to find the 'high resolution' aquire


OT insurance

Started by David Eather in sci.electronics.design10 hours ago 35 replies

A question for those in the US. If you have health insurance, get sick and have to buy an expensive drug (like $2000 per month) how much does...

A question for those in the US. If you have health insurance, get sick and have to buy an expensive drug (like $2000 per month) how much does the insurance company give you back? What does that depend on? TIA -- Using Opera's mail client: http://www.opera.com/mail/


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