Latest threads in Electronics Designshow only best voted threads
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Subsea permafrost on East Siberian Arctic Shelf in accelerated decline
This could go off like a bomb, figuratively speaking. "Dr. Semiletov added that the 5 billion tonnes of methane that is currently in the Earth?s atmosphere represents about one percent of the froz en...
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6 years ago
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Any hobbyist OPM magnetometers yet? picotesla, like a SQUID
Flying a raster pattern with a detector over the landscape; I bet the real money is in undiscovered pallasites, not ancient submerged anchors or cannon. And, go get a shovel, no need for rental marine...
18
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6 years ago
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18 | |
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Active filter with gain
Dear all, I need an as high order as possible filter for ~80kHz small signals with good phase linearity (don't care much about the amplitude response flatness). My current choice is to use LTC1562-2...
60
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6 years ago
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60 | |
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4A2D LDO Specs
I am trying to find a definitive document (English preferred) that outlines the official output current capability of the 4A2D (@ 3.3V). I see that the official schematic for the stm32 "blue pill" PCB...
8
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6 years ago
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OT: Pew Current Events Quiz
I got all 10 out of 10.
55
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6 years ago
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55 | |
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SED for future generations, or just a place to find post details
Hi So, my first SED post was probably 20 years ago From my point of view SED is great, learning stuff I could only find with c onsiderable effort in textbooks, apart from the too many OT posts So a...
14
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6 years ago
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Huh, cap multiplier needs an idle resistor...
So testing a photodiode TIA, I put a cap multiplier on the bias supply. Weird behavior, mostly not fast enough. I stuck 10 k ohm resistor to ground from the emitter end, and that cured it. So that's...
18
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6 years ago
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18 | |
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Toroid winding question.
I need to wind a ferrite toroid. Two windings, 65 turns and 10 turns. 65 turns on first with 0.5mm wire, single layer, nice and snug. I know that a 'there and back' two-layer winding would avoid the...
40
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6 years ago
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Connecting three single phase transformers to get single 3 phase transformer
Could some guru on this newsgroup please help ? I am trying to create a simple 3 phase transformer from 3 single phase transformers. I am unsure about the inter-connection of these three transformers....
18
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6 years ago
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18 | |
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Powering Cambridge 210w 8ohm Sub woofers
Hello People, On this website you can see a picture of a three voice coil sub woofer: Also known as Cambridge 210w 8ohm Sub woofers (taken from creative gigawork s s750 7.1's). Apperently this is a...
7
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6 years ago
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PI controller capacitor
MLCC capacitors are not recommended because of piezo-effect related noise. How bad/serious is it? I haven't used ceramics in this application yet. I need time constant in the order of tens of seconds....
27
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6 years ago
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Fast, Fet, Fifteen (volt rails.. opamp)
Hi all, quick question. I'm looking for a FET opamp to goose up a photodiode circuit. (make it faster) It's got +/-12V power rails, single opamp, and 8-Soic package. The oap827 looks OK, Slew rate is...
11
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6 years ago
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Solid State240V dimmers and LED lights pulsating
Ok, I know this is caused by interference between the switch-mode converters in these wizz-bang new 240V lighting units, but what's the simplest way to stop it? Also, it is likely to be...
12
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6 years ago
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Ripple harmful in this circuit?
I've got a N/O sensor which is designed to last at least 10 years. I want the switching circuit it drives to last at least that long, plus 50%: 15 years. The sensor and circuit will be replaced every...
25
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6 years ago
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Help Identifying SMD SOT89 device
I have an SMD in a SOT89 case style that I can't identify. The case code is K2092. It is the final in a low power FM transmitter. I've been through a bunch of K code lists without success. Your help...
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6 years ago
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