Latest threads in Electronics Designshow only best voted threads
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Re: Cheap AND simple respiration detector
On a sunny day (Mon, 06 Jan 2014 10:41:56 -0500) it happened Neon John wrote in : Thermoouples can be easily made and are extremely fast: I guess the breathed out air is usually warmer than the...
18
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10 years ago
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18 | |
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Conversation with a new circuit designer
My kid's working for me, doing circuit design under my direction. I get this phone call: Him: "so, is it OK if I put a 3.3V symbol upside down" Me: "Well the rule of thumb is absolutely not, but if...
49
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10 years ago
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49 | |
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Google Groups Alternative
I remember some years ago when one could configue an email program like Outlook or Outlook express for newsgroups. you needed to put in some numbers for an NNTP server or someting like that. Any idea...
33
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10 years ago
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OT: Firefox 26 and PDFCreator 1.7.2 - non-searchable text
I've spent the past hour or so trying to discover while printing using PDFCreator 1.72 in Firefox 26 why I no longer get searchable PDFs. In the past I have created searchable PDFs and now becoming...
17
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10 years ago
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17 | |
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Wireless microphone crystals
Hi, I ended up with a VERY old stack of 50-100 paper envelopes, each containing at least one crystal HC-49 full size. Some are new, some pulls. There are alien markings like 77-TX and T82B-TX as well...
2
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10 years ago
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2 | |
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LED replacement for 48" fluorescents
I think I posted hear a long time ago about a homemade LED replacement where I had to make my own fixture, and it worked out well. I bought parts to do a 48" retrofit some time ago, and finally got...
84
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10 years ago
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84 | |
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Calculate PSS of CMOS inverter
How to calculate the PSS (power supply sensitivity) for a CMOS inverter? I'm struggling a bit because I do not get meaningful result values. Let explain what I have. I have the following transistor...
1
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10 years ago
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PSRR of CMOS inverter
How to calculate the PSRR for a CMOS inverter? I'm struggling a bit because I do not get meaningful result values. Let explain what I have. I have the following transistor parameters from a simulation...
2
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10 years ago
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2 | |
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OT: SOT-523 PNP Question
I need something like a 2N3906 device in an SOT-523 package BUT with pin-out: 1 = Base 2 = Collector 3 = Emitter A client screwed up his PCB layout and has _only_ 5600 boards to patch... by Tuesday...
97
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10 years ago
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97 | |
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Better on east coast
Better on east coast: BTW there are high altitude jetstreams that must have carried a lot of bad 'smoke' all over the US too. The US gov has just bought millions of potassium iodide pills: Low level...
56
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10 years ago
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56 | |
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FFC jumpers
Hi, all, Distributor prices for FFC jumpers appear high, e.g. $5 for a 4-position, 6-inch unit at 0.5 mm pitch. That's pretty steep, considering the connectors only cost 60 cents per end. Where do you...
2
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10 years ago
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2 | |
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OT: Latching Door Stop
The door between our garage and house interior is a spring-loaded fire door... PITA when carrying bags of groceries, so I'm looking for a latching door stop, wall or base-board mounted (floor is tile,...
24
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10 years ago
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24 | |
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Searching for Panasonic TK1-12V Relay Replacement
I am searching for a suitable replacement for a discontinued Panasonic TK1-12V relay: Single side stable with either standard PC board or self-clinching terminals. I'm not concerned too much about the...
18
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10 years ago
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18 | |
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Sound chips that natively go to DC?
Folks, The subject pretty much says it. Are there any that can at least be coaxed into DC input and output by disabling internal cancelers and such? Should not be too drifty. The digital interface...
20
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10 years ago
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OT: "Domain Services"
Beware of e-mail "bills" from companies like "Domain Services" mentioning FINAL NOTICE OF DOMAIN LISTING. They *always* quote a deadline date of about one year earlier than the true date. This crap...
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10 years ago
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