Latest threads in Electronics Designshow only best voted threads
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Thermistor pressure sensor
Thermistor pressure sensor. Here's a circuit for using a thermistor as pressure sensor. from here, It's like a pirani gauge in that you measure how much voltage you need to keep the element at a...
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9 years ago
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Re: Question on zero-crossing circuit
This one is kinda cute Simple, cheap, low power, tight and accurate window. (Assuming you want an isolated AC line zcd, which you may not want)
5
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9 years ago
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5 | |
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Best overall website hosting - software development platform
I am looking for a software development tool(s) that will let me: -do a few simple graphics -mostly text -a very simple Paypal or other payment system - very low key, as $ not the aim -a means to...
2
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9 years ago
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2 | |
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Electronic Stethoscope - New Design
Thanks to everyone who responded to my previous thread on building an electronic stethoscope from a schematic downloaded off the internet. I spent days trying to get it working, and have come to the...
25
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9 years ago
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25 | |
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Thermoelectric heater control
Has anyone worked with thermoelectric heaters before? I have one I need to control, and I was just going to make a PWM circuit, but I googled thermoelectric heater control, and these specialized chips...
18
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9 years ago
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18 | |
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Watt Sun Atto Parsec
If you remember the guy (and whatever happened to him, hasn't been seen here for years now), he'd probably get a kick out of this one. Around 67% efficient, 1W capacity (the Chinese LED claims "3W",...
7
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9 years ago
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7 | |
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economic mystery
If there's an Invisible Hand that makes supply rise to meet demand, how come Safeway is always out of Boston Creme Donuts?
102
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9 years ago
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102 | |
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Has anyone been in the twilight zone?
I had a friend who said she was walking at night in the australian outback. It was pitch dark, couldn't see your hand in front of your face. Suddenly she had a feeling, and she switched on her...
31
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9 years ago
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31 | |
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A decent alarm clock - what is it?
I have wanted an alarm clock with following features -loud as hell, adjustable to the particular circle of hell :) -reliable as the sun. -portable, programmable easily.-can't be lost. So I bought an...
3
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9 years ago
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3 | |
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Another Woman at the Helm- This Time Lying and Deceiving but Killing People Nonetheless
Sharon Helman, Director of Phoenix Veterans Administration Hospital, another useless token sleaze: Top officials at the Phoenix VA deny any existence of a secret waiting list in an in-depth interview...
5
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9 years ago
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5 | |
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Charge time
6 VOLT 4.5AMP HOUR RECHARGEABLE SLA 4.5AH SEALED BATTERY If I use a 500 Mah charger to charge it, is there a formula to determine the charge time based on the starting voltage ? Thanks gentlemen and...
11
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9 years ago
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11 | |
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Anybody testing the reliability of computers ?
Hello, I worry sometimes about cosmic interference or electric magnetic interference or just mobile energy signal interference with computers. Is anybody measuring "rate of computer crashes" ? It will...
7
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9 years ago
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7 | |
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Scam or legitimate music site ?
This is way off topic for many, but I have a feeling that there are more than a few real musicians and even more aspiring musicians in this forum. I am searching the net for online music shops for a...
5
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9 years ago
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5 | |
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OT vacuum pump.
Hi all, I'm looking to buy a two stage vacuum pump. This may not be the best forum, and if some of you know a vacuum related forum then please do share. This will be used in the lab as a roughing...
19
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9 years ago
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19 | |
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Clamp on "Ohm" Meter?
At 12:30 this video shows a clamp on ohm meter. I don't see any other wires other than the hot wire connected to the ground rod. I'm sure the clamp on doesn't assume 120V and calculate ohms. What am I...
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9 years ago
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