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dsavitsk

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Everything posted by dsavitsk

  1. Happy Birthday!
  2. This much I am familiar with. And in essence you are basically saying that a CCS has a high impedance that forms a voltage divider with the load with the lion's share of the current going to the lower impedance portion. Were it practical to do so and if we didn't care about efficiency, an amp with a 100KV supply could use a 10M resistor to much the same effect. I guess the question is that in a common cathode triode, the lowish plate impedance drives the plate load in parallel with the load. A pentode is the opposite and has a Zout that is PS's Zout in series with the resistor load with the tube modulating the PS. So I am wondering if that resistor load on the pentode is a reasonable and somewhat unexplored way to drive these things or if your above calculation contains something to suggest otherwise.
  3. Could you comment on the influence of the plate impedance on your calculations. Or specifically, when the output device itself is a constant current source. Several of the triode based amps all have a lowish impedance. But some of them use a cascode of some sort which would produce more pentode/transistor like plate curves with a very high Z. Does it matter?
  4. dsavitsk replied to kevin gilmore's topic in Do It Yourself
    Very nice build, Kerry!
  5. Japanese cabbage and white bean stew.
  6. dsavitsk replied to Grahame's topic in Miscellaneous
    As someone whose monthly data usage is in the 100 MB range, I can't wait to dump Verizon.
  7. Next time, look into dd which has always worked for me.
  8. Why don't you have Camexpert drill them if they need to be so precise?
  9. Goodness, Shelly!
  10. Oh, and this. I was a record collector many years ago. Black is common, peach seems to be relatively common, but I've not seen the 1st pressing burgundy swirl very often.
  11. That's hilarious. My own feeling is that people like what records sound like because of an ASM response. The subtle background of scratching crackling vinyl is pleasant. I have old B&W speakers with plastic cones that elicit a similar sort of analog-y sound and feeling.
  12. Happy Birthday!
  13. Hmmm. That's awfully nice, but I think it must just photograph well.
  14. We found that there is a whole genre of youtube videos of birds for cats to watch. So we now watch Thursten watching TV.
  15. 生日快乐
  16. dsavitsk replied to dsavitsk's topic in TV
    Our contract finally ended, and the day of cable cutting is at hand. We switched to Comcast for internet + HBO. Should save us >$1000/year which is nuts.
  17. That's not just the best present I got this year, I think it is the best birthday present ever!
  18. I am too. I'd take the best of it as good natured ribbing, and the worst as insecurity. I thought the original was fine, if perhaps a bit out of place. If nothing else, it made me think that I should turn my fume hood on more often, which then made me think about how my crappy fume hood does jack, so it wasn't entirely useless. At any rate, I'd listen to guzziguy above.
  19. For a counter point, I like my Canon S100 a lot. It is way under your budget so you could probably attend 5 or 6 additional concerts with the savings. The Sony looks nice, too, and who wouldn't want a camera made by an insurance company? Take a look at the little Panasonics, too (the one with the Leica lens). I know some people who swear by it.
  20. We have about that much driveway, and a very undersized/underpowered snow blower. 3 hours is about how long it takes us. Get the biggest one you can justify.
  21. And then hope they don't touch your tongue while you drink.
  22. The software that runs the Arduino on the Shepeoko/X-Carve will allow you to essentially do this from a computer keyboard, and it costs way less than $5K. It is very easy. There are easier ways, though, so my guess is that you'd not actually use it that way. I am happy to let you play with mine to your heart's content if you pop down to Hartford. If there is a good dinner involved, it might find its way up to you

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