What Happened ?

Started by Anonymous in sci.electronics.design1 hour ago 3 replies

To the people who had much to say about Trump until he beat the shit out of that stupid impeachment shit ? Give up already ? You can impeach...

To the people who had much to say about Trump until he beat the shit out of that stupid impeachment shit ? Give up already ? You can impeach again before November, and maybe win the senate. HAHAHAHAHAHAHA And I don't want to her about a lack of proof, proof means fucking nothing to a liberal. Otherwise there are several peole they would have kicked out of their club, one


OT: more from the resident alarmist

Started by Anonymous in sci.electronics.design4 hours ago 217 replies

https://www.forbes.com/sites/annashedletsky/2020/02/07/coronavirus-hits-electronics-manufacturin g-hard-companies-are-scrambling/#75d2b797369c ...

https://www.forbes.com/sites/annashedletsky/2020/02/07/coronavirus-hits-electronics-manufacturin g-hard-companies-are-scrambling/#75d2b797369c (Electronic) Factories have been shut down as part of the unprecedented extended Lunar New Year, which was supposed to end on January 30, and has now been extended until February 9 (not a chance) at the earliest. (local government requires 14 day


Skybuck Flying's Corona Game !

Started by Anonymous in sci.electronics.design5 hours ago 3 replies

Hello, Today, 28 february 2020, I just created a Corona Game ! http://www.skybuck.org/Games/CoronaGame/ You can download the executable...

Hello, Today, 28 february 2020, I just created a Corona Game ! http://www.skybuck.org/Games/CoronaGame/ You can download the executable from the link above. Direct link to executable: http://www.skybuck.org/Games/CoronaGame/CoronaGame.exe Direct link to zip file: http://www.skybuck.org/Games/CoronaGame/CoronaGame.zip There is also a Game Manual.txt that you might want to re...


Composite amps

Started by Phil Hobbs in sci.electronics.design7 hours ago 84 replies

Hi, all, I'm generally prejudiced against composite amplifiers (two op amps inside one feedback loop) because they're generally squirrelly,...

Hi, all, I'm generally prejudiced against composite amplifiers (two op amps inside one feedback loop) because they're generally squirrelly, with poor settling performance and weird transient response. On the other hand, my aversion to them means that I don't have as much experience with them as do composite-amp fans. So what do you folks say about them? Orchids? Onions? Actual ex...


interesting video on "diy" thermal epoxy

Started by Lasse Langwadt Christensen in sci.electronics.design7 hours ago 7 replies

https://youtu.be/8MOTMq9g8Nk

https://youtu.be/8MOTMq9g8Nk


Best way to solder prototype pcb with thermal-pad ICs?

Started by Winfield Hill in sci.electronics.design13 hours ago 17 replies

I'm struggling with issues prototyping PCBs having ICs with a thermal pad. I assembled a new 100-volt buck converter powering a 12V fan, see...

I'm struggling with issues prototyping PCBs having ICs with a thermal pad. I assembled a new 100-volt buck converter powering a 12V fan, see schematic: https://www.dropbox.com/s/ypvtp2z74nudps7/RIS-796_3_Fan-supply_sch.JPG?dl=0 The circuit uses the elegant NSC LM5163, a 100V 0.5A 1MHz converter in an SO-8 PowerPad package. On the pcb layout, I had extended the thermal pad beyond ...


Tektronix 2% Ag Solder

Started by Anonymous in sci.electronics.design14 hours ago 14 replies

Why ? I know it is for their proprietary (probably) ceramic connector strips. They indicate you can get by with regular solder once or twice but...

Why ? I know it is for their proprietary (probably) ceramic connector strips. They indicate you can get by with regular solder once or twice but too much and it breaks the bond. So does that mean that this solder can bond right to ceramic ? I think that is a neat trick if that is how it is. Is that the reason for the silver ? If so, or even off base and needing correction..


essay about engineers

Started by Anonymous in sci.electronics.design15 hours ago 69 replies

https://www.americanthinker.com/articles/2020/02/michael_bloomberg_the_engineer.html -- John Larkin Highland Technology,...

https://www.americanthinker.com/articles/2020/02/michael_bloomberg_the_engineer.html -- John Larkin Highland Technology, Inc The cork popped merrily, and Lord Peter rose to his feet. "Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"


Home lab parts

Started by George Herold in sci.electronics.design17 hours ago 99 replies

Hi all, so this is a fun question. I'm buying a bunch of parts from mouser for a home lab. ('Cause they have the laser diodes I want.) So I...

Hi all, so this is a fun question. I'm buying a bunch of parts from mouser for a home lab. ('Cause they have the laser diodes I want.) So I favor through hole parts, (for proto-typing) R's, C's, transistors... R's- 1% MF 0.25W 10,30,...300k, 1M, 10M, 100M (the last two not MF.) C's- COG's 1 pf to ?0.01 uF (1, 3.3, 10..) X7R 0.1uF bypass caps Al-electro 100uF/ 100V 2n4401/03 ...


I thought I was smart enough

Started by amdx in sci.electronics.design22 hours ago 6 replies

I'm try to help the guy with the LDR triggering a 555. I'm slowly walking him through it and now just triggering it with a wire momentarily to...

I'm try to help the guy with the LDR triggering a 555. I'm slowly walking him through it and now just triggering it with a wire momentarily to grd, to pull Pin 2 low, through a capacitor. But it won't trigger. Here's the circuit, what is needed to make the circuit trigger properly. > https://www.dropbox.com/s/fwxu5vqazzqist4/one%20shot%20wire.jpg?dl=0 Ignore the LDR for now I realize


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