Latest threads in Electronics Designshow only best voted threads
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How to Keep NiMH's From Loosing Charge
I can remember when a battery used to hold its charge for weeks or months. With some of the NiMH's now it seems like they are down 50% in a few days just sitting on the shelf. Yes, these are brand...
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9 years ago
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Another Woman at the Helm-This Time Allowing 9 Million Lbs Beef Unfit for Human Consumption on the Market
USDA inspector Lynnette Thompson apparently valued recreation sexual pleasure more than the safety of millions of consumers:
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9 years ago
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OT: Replacing drawer guides.?
At the old house I replaced several broken drawer guides with those nice ball-bearing full-extension types. I'm considering doing the same here... nothing broken yet, but the full extension would be...
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9 years ago
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OT: Who said this...
Who was it that said this in January 2000... "Marriage has got historic, religious and moral content that goes back to the beginning of time, and I think a marriage is as a marriage has always been,...
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9 years ago
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Use of Flat Disc as Antenna
I was just wondering, if I get a pizza pan (or any metal disk) and solder a lead to the center, would it act as an antenna for resonant wavelengths? It occured to me this might be a way to receive...
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9 years ago
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16 | |
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Bandswitching or SiC diodes in mixers?
Is it better to use bandswitching diodes (not PIN diodes) in (DBM) HF...VHF mixers? RDmax=0.7 ohm @ 3 mA Have somebody measured how fast they switch? E.g. BA591: Main page: - Another question: How...
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9 years ago
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firefox 29
My Firefox upgraded to v29. It looks awful. -- John Larkin Highland Technology Inc jlarkin at highlandtechnology dot com Precision electronic instrumentation
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9 years ago
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Quick Eagle question: German abbreviation for trimpot pad labels
Hi, all, and especially Joerg, My beautiful layout hunchback is laying out the boxcar lock-in board. It contains a current source to drive the LED, which has a trim pot. Normally over here, they're...
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9 years ago
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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)
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9 years ago
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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...
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9 years ago
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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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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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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",...
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9 years ago
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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?
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9 years ago
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102 |