OT: Emailer from website

Started by Jim Thompson in sci.electronics.design20 hours ago 10 replies

The trollers are constantly picking up an E-mail address from my website, forcing me to periodically change the address. How are these E-mail...

The trollers are constantly picking up an E-mail address from my website, forcing me to periodically change the address. How are these E-mail "forms" done on websites? No addresses are shown, just fill in the blanks and press "send". I'm looking for something simple that I (a non-Eunuchs-experienced person ;-) can install without much grief. Suggestions? ...


The Uninhabitable Earth

Started by Anonymous in sci.electronics.design20 hours ago 33 replies

This may sound bleak, but it's an understatement to be sure. This part sounds right:"Several of the scientists I spoke with proposed global...

This may sound bleak, but it's an understatement to be sure. This part sounds right:"Several of the scientists I spoke with proposed global warming as the solution to Fermi’s famous paradox, which asks, If the universe is so big, then why haven’t we encountered any other intelligent life in it? The answer, they suggested, is that the natural life span of a civilizati


O.T. Place Ampere

Started by Anonymous in sci.electronics.design1 day ago 25 replies

I'm in Lyon at the moment, and I've just walked back from Place Ampere, which features a bronze statue of André-Marie Ampère, who was born...

I'm in Lyon at the moment, and I've just walked back from Place Ampere, which features a bronze statue of André-Marie Ampère, who was born close to Lyon, and got a lot of his education there. I've spent more time at the Royal Institution in London, which was Michael Faraday's stamping ground, and I worked for a couple of years at EMI Central Research where Allan Dower Blu


OT: Sneaky piece-a-shit...

Started by Jim Thompson in sci.electronics.design1 day ago 2 replies

OT: Sneaky piece-a-shit... ...Jim Thompson -- | James E.Thompson ...

OT: Sneaky piece-a-shit... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus


Californica solar requirements screw all...

Started by Jim Thompson in sci.electronics.design1 day ago 114 replies

Californica solar requirements screw all... "What has not been widely discussed in the press ? and buried in the details of the bill ?...

Californica solar requirements screw all... "What has not been widely discussed in the press ? and buried in the details of the bill ? is that all new homes and _all_homes_sold_ must have solar panels as their source of energy." Note that "_all_hom


Tin whiskers in Grayhill switches

Started by George Herold in sci.electronics.design1 day ago 26 replies

Hi all, this is mostly just a rant. (though suggestions/ideas are always welcome.) Late last week I was testing an instrument going to...

Hi all, this is mostly just a rant. (though suggestions/ideas are always welcome.) Late last week I was testing an instrument going to India, part of ~$100k order. There's nothing at one switch setting... (WTF?) Long story short, we bought 250 grayhill switches from DK back in 2013 and they are all* growing whiskers. It's taken ~2 years for some to reach the pins. I don't know exa...


OT: It's all my fault...

Started by Jim Thompson in sci.electronics.design1 day ago 7 replies

Climate Change is all my fault.... KMA > :-} ...Jim Thompson -- | James E.Thompson ...

Climate Change is all my fault.... KMA > :-} ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal


silicone keypad carbon button contacts

Started by John Larkin in sci.electronics.design2 days ago 19 replies

We're doing a custom silicone pushbutton thing, sort of like this...

We're doing a custom silicone pushbutton thing, sort of like this one: https://www.dropbox.com/s/8hihd888w7rtxmx/Fingers_2.JPG?raw=1 https://www.dropbox.com/s/ruo7zujvx7mxerz/Fingers_3.JPG?raw=1 The pcb below the keypad will look something like https://www.dropbox.com/s/qyu2nrkhom78wkl/Fingers_1.jpg?raw=1 where the center hole lets light through to back-light the key, and the t...


which is the best metal to reflect microwave?

Started by DARS patel in sci.electronics.design2 days ago 4 replies

if any idea of maximum depth of penetration of microwave into the material will helpful, and also any document or research paper or any kind of...

if any idea of maximum depth of penetration of microwave into the material will helpful, and also any document or research paper or any kind of data will helpful. thank you.


Split control loop

Started by George Herold in sci.electronics.design2 days ago

Hi all, (as is usual) I think I figured this out in the process of asking you a question. But I welcome any input or comments. First a bit...

Hi all, (as is usual) I think I figured this out in the process of asking you a question. But I welcome any input or comments. First a bit of background. I made the laser diode controller ~10 years ago. I added this section so that you could side lock to one of the absorption features. Input signal is low pass filtered(single pole), DC offset, maybe some gain and then sent to the pi...


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