shipping from China

Started by John Larkin in sci.electronics.design47 minutes ago 88 replies

https://www.zerohedge.com/news/2018-10-17/trump-goes-postal-abandons-144-year-old-shipping-treat y-china I've wondered for years why the US...

https://www.zerohedge.com/news/2018-10-17/trump-goes-postal-abandons-144-year-old-shipping-treat y-china I've wondered for years why the US is killing small businesses by subsidizing shipping from China. Someone in power has finally noticed. Fixing this problem will complement the business income tax cut. -- John Larkin Highland Technology, Inc lunatic fringe electron


too cold

Started by John Larkin in sci.electronics.design1 hour ago 15 replies

I put some epoxy on an EPC bga GaN fet to glob-top protect it. And looked for a warm place to put the board to speed up the cure. LED lights,...

I put some epoxy on an EPC bga GaN fet to glob-top protect it. And looked for a warm place to put the board to speed up the cure. LED lights, switching power supplies, LCD scopes... there nothing warm any more. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com


various OTs

Started by John Larkin in sci.electronics.design2 hours ago 56 replies

https://wattsupwiththat.com/2018/10/12/another-space-telescope-shuts-down-one-week-after-hubble/ Gyros, reaction wheels, seem to be a...

https://wattsupwiththat.com/2018/10/12/another-space-telescope-shuts-down-one-week-after-hubble/ Gyros, reaction wheels, seem to be a chronic problem in satellites. I have a friend who designs cubesats, and he says that the gyros are the most expensive and unreliable parts. They should be redundant, or redesigned, or something. =========== Another friend, a Fellow of a giant areospac


water cooling

Started by John Larkin in sci.electronics.design3 hours ago

I really need to cool my little pulse generator....

I really need to cool my little pulse generator. https://www.amazon.com/gp/product/B00EWENKXO https://www.amazon.com/gp/product/B011QG23J2 Plus a big blue paint bucket from Loews half full of water, some plastic tubing also from Loews, and a bunch of water bottles and cold-packs cycled through the freezer downstairs. I drop a couple frozen things into the bucket when the water start...


Using 12V ignition coil at 24V

Started by Joerg in sci.electronics.design4 hours ago 10 replies

Got a current-controlled circuit that operates off of 24V, the European standard for large trucks. When I operate a 12V automotive ignition coil...

Got a current-controlled circuit that operates off of 24V, the European standard for large trucks. When I operate a 12V automotive ignition coil on it the coil hisses and squeals. Under 16V that noise stops. The only difference is that the ramp up to the same prescribed peak current happens in slightly under 1msec instead of 2msec. Repetition rate is around 10msec. A coil designed for...


Tomorrow's battery medium

Started by Anonymous in sci.electronics.design5 hours ago 132 replies

This will change a lot.

This will change a lot.


Toyota radiators

Started by Anonymous in sci.electronics.design6 hours ago 8 replies

I think they should recall all those radiators. Http://75.101.56.77/toyota What do you think? How difficult is it to have coolant level...

I think they should recall all those radiators. Http://75.101.56.77/toyota What do you think? How difficult is it to have coolant level sensors? It would catch the problems earlier and avoid engine damages.


OT: Lefties Finally Get a Clue!

Started by Cursitor Doom in sci.electronics.design7 hours ago 2 replies

Something heartwarming from a university campus for a change: https://tinyurl.com/y77fltyb 'bout time those stupid, good-for-nothing...

Something heartwarming from a university campus for a change: https://tinyurl.com/y77fltyb 'bout time those stupid, good-for-nothing shits woke up! -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per repro...


cool video, laser retina treatment

Started by John Larkin in sci.electronics.design8 hours ago 3 replies

https://int.vision.lutronic.com/intl/rgen/ -- John Larkin Highland Technology, Inc lunatic fringe electronics

https://int.vision.lutronic.com/intl/rgen/ -- John Larkin Highland Technology, Inc lunatic fringe electronics


3 cent microcontroller

Started by Klaus Kragelund in sci.electronics.design9 hours ago 32 replies

Amazingly, there is such a thing as a microcontroller that goes for less than a dirt cheap logic IC 3 cents in...

Amazingly, there is such a thing as a microcontroller that goes for less than a dirt cheap logic IC 3 cents in volume: https://www.youtube.com/watch?v=VYhAGnsnO7w Cheers Klaus


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