OT: Best Ever Sci-Fi short stories

Started by Cursitor Doom in sci.electronics.design34 minutes ago 44 replies

Screw electronics for a minute. What is the best ever sci-fi short story you have ever ever ever read? I'll kick off by nominating 'Time's...

Screw electronics for a minute. What is the best ever sci-fi short story you have ever ever ever read? I'll kick off by nominating 'Time's Arrow' by AC Clarke.


tig hi freq

Started by Hul Tytus in sci.electronics.design50 minutes ago 22 replies

sci.electronics.design tig high freq Does anyone here know what the frequency & initial voltage is of the "high freq ac" used in TIG...

sci.electronics.design tig high freq Does anyone here know what the frequency & initial voltage is of the "high freq ac" used in TIG welders? Google's offerings seem to favor client's advertising and "how to weld" documents, unfortunantly. Hul


OT: Hare-Brained Idea of the Century

Started by Jim Thompson in sci.electronics.design1 hour ago 17 replies

OT: Hare-Brained Idea of the Century... ...Jim Thompson -- | James E.Thompson ...

OT: Hare-Brained Idea of the Century... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete System


Class D, inductorless

Started by Anonymous in sci.electronics.design2 hours ago 9 replies

I've not done an inductorless class D before. This will be under 1w of output, run off expensive battery power sometimes, and will be budget...

I've not done an inductorless class D before. This will be under 1w of output, run off expensive battery power sometimes, and will be budget critical. The question is what frequency to pick. What's the lowest frequency one could be run at? What percentage of random small transistors could operate adequately at that frequency? I'm looking primarily for minimum cost & maximum transistor comp...


OpAmp Feedback Resistance vs. Stability

Started by Tim Wescott in sci.electronics.design2 hours ago 6 replies

So, about a decade and a half ago, I worked with some very ill-tempered rail-rail opamps. They were among the first-generation rail-rail amps,...

So, about a decade and a half ago, I worked with some very ill-tempered rail-rail opamps. They were among the first-generation rail-rail amps, and they had the "nice" feature that in spite of their specified behavior, they'd go unstable as a voltage follower if you just connected the output to the negative input -- but they'd work fine if you did so through a 1k-ohm resistor. I got i...


Another op-amp stability question (LT1677)

Started by John Miles, KE5FX in sci.electronics.design3 hours ago 3 replies

Tim W.'s question about the influence of resistance in the feedback path of a voltage follower reminded me of a similar problem I ran into a...

Tim W.'s question about the influence of resistance in the feedback path of a voltage follower reminded me of a similar problem I ran into a while back. I've used LT1677s as an integrator in several low-noise PLLs in the past and been satisfied with its performance. It's an old part and a fairly expensive one, but it's quiet and well-behaved in loop filters, with RRIO operation and g...


pricing

Started by John Larkin in sci.electronics.design6 hours ago 18 replies

Some companies are determined to not give pricing for their products. They want to know what it will be used for, how many we'll need,...

Some companies are determined to not give pricing for their products. They want to know what it will be used for, how many we'll need, when we'll need them. Then they say that someone else, maybe a rep, will contact us about pricing, and the silly dance starts over. I give up. If they don't want to sell stuff, that's OK with me. -- John Larkin Highland Technology, Inc lun...


ot drilling glass

Started by John Larkin in sci.electronics.design12 hours ago 108 replies

I have some double-pane windows that are getting moisture trapped inside. I've found that drilling a little vent hole fixes that. I got...

I have some double-pane windows that are getting moisture trapped inside. I've found that drilling a little vent hole fixes that. I got some Amazon chinese diamond core drills. What's the best way to use these? Slow with a drill or fast with a Dremel? Lubricate with oil or water? -- John Larkin Highland Technology, Inc jlarkin att highlandtechnology dott com http://w...


OT: Trump team *was* surveiled - proof emerges

Started by Julian Barnes in sci.electronics.design15 hours ago 29 replies

the truth will out lefty douchebags, the truht will out....... https://youtu.be/g7VvyUjkhWc

the truth will out lefty douchebags, the truht will out....... https://youtu.be/g7VvyUjkhWc


XSPICE

Started by Tim Williams in sci.electronics.design18 hours ago 4 replies

Had a thought to create some digital models using XSPICE primitives... ...I don't think I've seen them used before, in models, and I'm probably...

Had a thought to create some digital models using XSPICE primitives... ...I don't think I've seen them used before, in models, and I'm probably seeing why. Why did they see fit to create and release such uselessness? Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com


Ask a Question to the Electronics-Related community

To significantly increase your chances of receiving answers, please make sure to:

  1. Use a meaningful title
  2. Express your question clearly and well
  3. Do not use this forum to promote your product, service or business
  4. Write in clear, grammatical, correctly-spelled language
  5. Do not post content that violates a copyright