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Showing content with the highest reputation on 04/30/2021 in all areas

  1. Helped a friend make it home safely: Remember kids, don’t try this at home, my first graduate student at EIU studied the atrazine and glyphosate dynamics in snapping turtles.
    5 points
  2. Bo Diddley - Bo Diddley's Beach Party It makes me sad we don't have more live albums of the rock pioneers in their prime. Bo and his boys absolutely shred here for a straight up 30 minute hit of adrenaline. With performers like Chuck Berry, Bo, Little Richard, Jerry Lee Lewis, and others the studio recordings are ok, but these guys all spent their lives on the road performing to live audiences night-in and night-out. Live is how their art is meant to be experienced. It isn't until the Beatles and The Beach Boys before rock music starts doing things in the studio that could never be done in a live setting. I'm glad we at least have this gem from Bo's prime.
    3 points
  3. jesus and mary chain - stoned and dethroned
    2 points
  4. Mint Julep -- "In a Deep and Dreamless Sleep" It's either shoegaze with electronic elements or electronic with shoegaze elements. Either way, I like it.
    2 points
  5. Either Amazon has started to take it's same day delivery pledge seriously or fire season has begun.
    2 points
  6. 2 points
  7. I guess the question is, did you think I would lie about that?
    1 point
  8. Oh snap! I just found out that a German ambient artist I like put his entire catalog on Bandcamp (in FLAC, of/c) ...much of it for free(!) https://phelios.bandcamp.com/
    1 point
  9. Thanks James I was checking them with a wrong connection. Now I can read from 230 to 235v PD. I'm sorry it's hard to hold all of this with one hand
    1 point
  10. the style of that 6 in the 2sk216 seems a lot different from mine. But maybe they changed font... perhaps its a 7s2sk216 (7 2sk216 is series. in a single package)... 🤪 I just tested a few of mine. Setup on the DY294 : selected NPN gate and source connected to the emitter on the dy294 drain connected to collector on the dy294 and I get around 230V breakdown. spec sheet says 200V.... ----------------------------------------------------------------------- My peak dca75 in identify mode says the following: N-Ch Enhancement mode MOSFET Vgs(on)=0.557V at Id=5.01mA and Ig=0µA Vgs(off)=0.080V at Id=5.3µA gm=25.6mA/V at Id=3.0mA to 5.0mA Rds(on)=6.1Ω at Id=5.0mA and Vgs=8.0V with body diode
    1 point
  11. Breakdown voltages that high for 2SK216 seem extraordinary. If the DY294 readings are correct I would say that the devices probably not are 2SK216.
    1 point
  12. Hmm, that seems awfully high for the 2SK216. I was expecting 200V or slightly higher. Nice microscopic photos.
    1 point
  13. RIP to Daniel Kaminsky, security guru who basically saved the internet.....and fuck diabetes! https://www.nytimes.com/2021/04/27/technology/daniel-kaminsky-dead.html
    1 point
  14. I think it might well be thermal. About a month ago I replaced the groove tube el34s with modern production branded mullards and the bases of these run far hotter than the groove tubes so that could also have contributed more heat conduction to the leds... I did match all 6 leds in the amp by curve tracing on a peak dca75. The other 4 leds still work well and have very similar voltage drops meanwhile both the D24 leds (which are positioned close to the El34s) degraded. I did not raise any of the leds off the pcb and I think there was excessive heat conduction from the pcb into the underside of the led. This time i'm using leds from the same batch but have raised them off the pcb and time well tell if they degrade. I carefully de-soldered the degraded leds and curve traced them. As expected their characteristics had considerably changed compared to the rest of the leds in the bag. The D24 led on the left channel which is closest to the EL34 had the most change from new and the lowest voltage drop in circuit 1.4V in circuit, the righthand channel D24 is a little further from the EL34 and in circuit had 1.5V drop and is a little closer to a new led which has a drop of about 1.7V in circuit. To put the change into context I measured multiple leds from the bag and the curves almost superimposed over each other. So the drift in the D24 leds is significant.
    1 point
  15. The components will age, LEDs in particular, and accelerated under elevated temperatures. I would check the LED’s I/V curve on the curve tracer before popping it on a circuit. They could differ quite a bit in characteristics even if looked similar on the outside. If a circuit only designed less than 1ma for the LED, that’s likely starving it. I’d make sure the operating current is sufficiently past the “knee” area of the curve.
    1 point
  16. That's what normal people eat Brent!
    1 point
  17. Cancel/refuse the shipment. Now that I have a 16” jointer I can whole heartedly recommend nothing less that a 20” jointer.
    1 point
  18. I somehow thought the punch line was going to be different
    1 point
  19. Already planning a wood scrap, giant drawer, mobile jointer cabinet so I can have it done before the unit gets here tomorrow. I think it will be a disappointing unit, but the fancy ones you guys have would not be to be until February, months after I have moved on from woodworking.
    1 point
  20. Whew! What a relief! Can't tell you how many times I saw something and would have loved to see some comments from you guys. Looking forward to a boatload of "Bobcat tossing" memes from Knucks,...
    1 point
  21. For those that don't know - https://www.datacenterdynamics.com/en/news/generator-fire-brings-down-webnx-data-center-in-utah/ Short version - power outage at the data center, backup generator kicks in and catches fire, fire suppression systemin triggered, lots of damage ensues. HC's server was amongst the most damaged and thankfully, in the end, was able to be repaired allowing for the site to be restored. Thanks to Todd for sticking with us for all these years.
    1 point
  22. The dream of every person of middling height, that ladderless life.
    1 point
  23. This was not meant to happen. Modifying the original DIY T2. But now it’s done. I couldn’t resist to change the output current sources. Replaced two 2SA1486 with single 2SA1968 and removed four 150K resistors. I put a small heat sink on the transistors. They will dissipate half a watt or so. 2SA1968 is a 900V device, but I’ve reduced high voltages to +/-400V so that should be fine. By the way the 2SC3675 is also a 900V device.
    1 point
  24. I tested it with my old DY294 and I have breakdown voltages from 1470 to 1485v.
    0 points
  25. RIP El Risitas. https://www.bbc.com/news/world-europe-56925999 He was quite famous in his own country, but rose to international fame as a meme: https://knowyourmeme.com/memes/people/spanish-laughing-guy-el-risitas-interview-parodies This is my favorite iteration:
    0 points
  26. R.I.P. astronaut Michael Collins...
    0 points
  27. I missed all of you mucho, and Brent a little bit, but he's down here ATM anyway.
    0 points
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