LS/HCT/etc. logic familes

Started by bitrex in sci.electronics.design2 days ago 105 replies

Is LS logic still at all relevant for new designs? Is HCT logic still at all relevant for new designs? Is the 74xx/4000-whatever series still at...

Is LS logic still at all relevant for new designs? Is HCT logic still at all relevant for new designs? Is the 74xx/4000-whatever series still at all relevant for new designs? Do you use them at all regularly in your work, or have you moved on to more modern families (or Just Use A PIC)? They still have many "LS" series ICs available in fairly large quantities at the usual distributors, ...


America: A Nation of Certifiable Morons

Started by Anonymous in sci.electronics.design2 days ago 113 replies

1 In 4 Americans Thinks The Sun Goes Around The Earth, Survey...

1 In 4 Americans Thinks The Sun Goes Around The Earth, Survey Says http://www.npr.org/sections/thetwo-way/2014/02/14/277058739/1-in-4-americans-think-the-sun-goes- around-the-earth-survey-says


Blacker Than Black- Even Absorbs Laser

Started by Anonymous in sci.electronics.design2 days ago 1 reply

Vantablack http://www.sciencealert.com/this-object-has-been-sprayed-with-the-world-s-blackest-pigment-and-i t-s-freaking-us-out

Vantablack http://www.sciencealert.com/this-object-has-been-sprayed-with-the-world-s-blackest-pigment-and-i t-s-freaking-us-out


Hating Made in America

Started by Jim Thompson in sci.electronics.design2 days ago 5 replies

...Jim Thompson -- | James E.Thompson | mens | | Analog...

...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | |


LT3757 gripe

Started by Tim Wescott in sci.electronics.design2 days ago 50 replies

So I'm having trouble with a switching circuit, and I think it may be the FET not turning off really promptly. I'm using an LT3757. So I use...

So I'm having trouble with a switching circuit, and I think it may be the FET not turning off really promptly. I'm using an LT3757. So I use this network to try to speed up the switch-on and switch-off: 10 | ___ |-+ o----o---|___|-----o----o------> | | | | |-+ | |


5.25 trillion pieces of plastic litter Earth's oceans

Started by Anonymous in sci.electronics.design2 days ago 26 replies

Look at this ungodly mess! http://www.newshub.co.nz/home/world/2017/07/5-25-trillion-pieces-of-plastic-litter-earth-s-ocean s.html "Research...

Look at this ungodly mess! http://www.newshub.co.nz/home/world/2017/07/5-25-trillion-pieces-of-plastic-litter-earth-s-ocean s.html "Research has attributed as much as 60 per cent of the world's plastic pollution to just five countries, China, Indonesia, Philippines, Vietnam and Thailand, likely reasons those oceans are so polluted."


Good Find, CD4007 Spice Model Library....

Started by Jim Thompson in sci.electronics.design3 days ago 43 replies

Good Find, CD4007 Spice Model Library, at Rochester Institute of Technology, actual measurements by Professor Lynn Fuller... ...

Good Find, CD4007 Spice Model Library, at Rochester Institute of Technology, actual measurements by Professor Lynn Fuller... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mi


CMOS Cookbook

Started by bitrex in sci.electronics.design3 days ago 4 replies

The local liberal arts college seems to have a copy of the 1988 edition of the CMOS Cookbook! Even seems to have been a fairly popular...

The local liberal arts college seems to have a copy of the 1988 edition of the CMOS Cookbook! Even seems to have been a fairly popular checkout in the years prior to the card catalog going all electronic:


Diode Array

Started by Anonymous in sci.electronics.design3 days ago 9 replies

I'm looking for a replacement for the CA3039 diode array, which has been successfully used in a precision demodulator circuit operating up to 1...

I'm looking for a replacement for the CA3039 diode array, which has been successfully used in a precision demodulator circuit operating up to 1 MHz. The part has been obsoleted by Intersil. The important characteristics are low leakage current (less than 0.1 nA at 25C with 1 V reverse bias) and close matching of forward voltage drops. Also, the forward voltage drop with 1 nA or le


You Need to Watch Who You Slap and Spit On

Started by Anonymous in sci.electronics.design3 days ago 21 replies

The idiot works in IT consulting,...

The idiot works in IT consulting, figures: http://www.blogtrendbuzz.info/2017/07/14/racist-white-man-slaps-and-spits-on-elderly-black-woman -and-it-turns-out-she-was-a-judge-video/


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