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There are 35601 individual articles here that are part of 5218 discussions
Please see below the list of the most recent and the best rated articles in General Electronics

The most recent discussions

Ancient refrigerators


January 8, 2021, 4:43 am

How did they make ice, in the days before electricity? And did they figure it out empirically, prior to the development of thermodynamic theory? ? Rich Read more »

Power Routing Switch


December 7, 2020, 4:27 am

Working on a gadget that uses a 12 volt motor (10 amp peak) and misc electr onics running on lower voltages. It is powered from an external PSU like a laptop supply, but 12 volts. There is also a ... Read more »

warm air


November 18, 2020, 9:37 pm

A nearby college includes a building, surrounded by an outdoor arcade, at street level. At one point, the warm internal air is expelled, which is natural, they perform continuous circulation. A... Read more »

C.Crane radio antenna problem


November 14, 2020, 5:10 am

Hi, I have a C.Crane Witness + Radio. It has a tivo-like function and can record broadcasts to mp3 files on an SD card. The antenna fits into the headphone jack and is about 2 ft long. The recep... Read more »

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 ( https://famaga.ch/catalog/delta/order-267889 ) 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 »

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The best rated discussions

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5

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 »

rating
5

car phone


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

rating
5

IBM Selectric typewriter


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

rating
5

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 »