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There are 35592 individual articles here that are part of 5214 discussions
Please see below the list of the most recent and the best rated articles in General Electronics

The most recent discussions

Lime skates

September 14, 2020, 8:46 pm

I looked at one of those Lime electric skateboards. It has a QR code sticker, and no other user interface, that I noticed. I never rented one, and wonder how the system works, the network stu... Read more »

Rhode & Schwarz - Website Down?

July 29, 2020, 1:10 pm

Hello, all. I haven't been able to access the subject's website for 2 weeks now. Assuming the problem isn't on my end why would a major supplier of test equipment allow this? Thanks for any in... Read more »

iPhone SUPER discounts

April 20, 2020, 6:57 pm

*** iPhone SUPER-SPECIAL-DISCOUNT 80% OFF --- UNBEATABLE SUPER-PRICES !!! *** Save LOTS OF CASH on a wide collections of iPhones, 80% off everything must go to make place of next generation iPhone ... Read more »

Control a VFD via cDAQ 9178

February 21, 2020, 8:33 am

I want to control a Delta VFD ( ) unit through the cDAQ-9178. I got an analog input module NI 9201,analog output module NI 9263 and digital output module ... Read more »

IBM Selectric typewriter

April 9, 2019, 10:04 am

I have two cycle wheels for the IBM Selectric typewriter. Read more »

black light

February 11, 2019, 10:53 pm

I saw a pocket flashlight in a hardware store yesterday, it shines UV. Such a package is new to me. What is it good for? What's inside? And whence the origin of the term 'black light'? I rec... Read more »

Pet Daycare and Lodging Market Overview, Growth and Analysis Research Repor...

November 20, 2018, 9:55 am

The report Pet Daycare and Lodging Market by Key players highlights the ess ential market dynamics of Pet Daycare and Lodging Market sector. The effici ency of this segment has been studied deeply ... Read more »


November 15, 2018, 9:24 pm

How does a defibrillator work, what's inside? And how does it affect the body, ameliorate a heart attack? Hoping there's a cardiologist in this group, as well as engineers - -- Rich Read more »

IC test clip with LEDs

October 17, 2018, 8:16 pm

I remember years ago seeing a clip that would fit over an IC and show the logic state of each pin on an LED (or an LED pair). Something like this Read more »

Power a test TTL circuit from USB?

October 16, 2018, 1:04 pm

Having not touched any of this kind of stuff for years I'm looking to power a small TTL test circuit which I intend to built on a breadboard. I wondered if I could run it off USB power. In other ... Read more »

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The best rated discussions


LEDs Series-Parallel OK?

  [ 2 ]

Connecting LEDs in series-parallel like the ASCII schem below is okay? I don't see any reason why it shouldn't work. If a lot of LEDs, like the 7 below, are paralleled, the total current for each... Read more »


car phone

In old movies, you sometimes see something called a 'car phone'. Always in a limousine. How did those work? -- Rich Read more »


IBM Selectric typewriter

I have two cycle wheels for the IBM Selectric typewriter. Read more »


LED flashlight

I was looking at some LED flashlights, with ratings from 50 to 150 lumens. A p-n junction is a p-n junction, how do they get such varied outputs? I examined the working end, they all look alike, w... Read more »