Latest threads in Electronics Designshow only best voted threads
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115 V car outlets
We rented a Jeep Cherokee to drive some gear up to Chicago for an experiment. It had a 115 V outlet convenient to the back seat. I plugged my laptop mains adapter in, and found that the computer...
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8 years ago
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screen DPI and picture resolution
Seems the bigger the monitor, the worse the DPI.. CRT, aka boob tube (Dell E551): * 800x600 gives approximately 75DPI (depends some on adjustment H,V size). * 1024x768 gives approximately 98DPI...
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8 years ago
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Sensoray 2612 giving erratic results
Hello If you are a person from the future searching the internet because you have a Sensoray 2612 ADC board that is giving erratic results, especially when it is humid or when there is an electric...
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8 years ago
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What is the attenuation of a 2.5GHz signal in a 50 ohm coaxial stripline structure in 1/2 oz FR4 PCB?
Envision 1/2 oz copper, FR4 PCB, standard 10 layer stackup using five 5 mil BLANKS. STACK=UP: trace 1 GND trace 2 trace 3 GND Vcc trace 4 trace 5 GND trace 6 Make the the coaxial stripline structure...
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8 years ago
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Reading a spec sheet for a power socket
I was contemplating using one of these Am I missing something, or does the spec sheet not give enough information to determine the position of the plastic mounting pins? Sylvia.
24
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8 years ago
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6.0 volt SLA- Is it dead ?
I have a 6 volt 4.5 mah SLA battery. I have been charging it for 10 hrs. at 500 ma. The battery powers (2) 1000 lumen lights for my bicycle. When I powered up the lights, they are pretty dim. Is there...
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8 years ago
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Ultracapacitors for your Interociter, 50 farad 2.5V $1.75
This surplus junk catalog ...this isn't paper, it's some kind of metal! :) One of the surplus outlets currently has fifty farad "super caps," but for that value I they're probably ultracapacitors....
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8 years ago
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OCXOs are getting cheap
Just got a quote for a nice 10 MHz DIP14 VCOCXO from a major vendor; $39 at 100. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com
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8 years ago
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Radio Shack to sell customer data
Most of us have been customers of RS one time or other, but how many of us figured our data would end up like this without having a say-so about it? A while back the RS sales clerks routinely asked...
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8 years ago
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Partly off topic - electronic slider
Hi to all. I have one problem and 100 ideas how to solve this, but none of them seems OK. One guy wants to replace button press with some electronics that would do the same. Additional problem is that...
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8 years ago
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12V in cars, or not? is it regulated?
Hi Taking power from the battery will change as it charges while driving, as well as it depends on the speed etc. By my own experience it can be 14-16V. And should be 13.2 when idle. I am thinking...
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8 years ago
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jokes
jokes ... well was thinking about making a joke conversation along the lines of writing both questions and replies here, and then start some subject like a secret way to route tracks on PCB that makes...
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8 years ago
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PING: Win Hill
Is Amazon's stock of 3rd Edition now second printing? ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan...
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8 years ago
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O/T: eraser
Off topic, but I know there are some Jeopardy candidates in this group, who know all kinds of useful/useless stuff - I need to erase some handwritten characters, from standard ink, standard pen. Black...
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8 years ago
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Need 6V ballast for 9W CFL
Does anyone know where I might get a ballast to drive a 9W CFL tube (germicidal lamp) from a 6V source? There are a number of good circuits around, but all require a custom-wound transformer, which...
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8 years ago
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