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Physics forums censor ship
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Physics forums censor ship
Bill wrote in news:3729714d-ed1e-4e8f-9e25-
: On Jan 10, 11:08*am, jaroslav lipka wrote: On Jan 10, 11:58*am, tom wrot * He has never designed, never built, and never tested anything that performs like his claims. * Tom * * As you are so fond of saying, "you made the claim, you prove it", or is you claim as empty as you head. Jaro How precious of Art to have a Slovak sock puppet. Two swipes with one backhander. An amusing skill. :) |
Physics forums censor ship
On Sun, 10 Jan 2010 13:04:01 -0600, Lostgallifreyan
wrote: Hmm, on the subject of Chinese kings... "A king was pleased with the help of a warrior, and asked what the warrior would take as reward. Actually, this is ascribed as the reward offered by an Indian Prince to the inventor of chess (which was invented in India) which had become the Prince's favorite game. 73's Richard Clark, KB7QHC |
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Richard Clark wrote in
: On Sun, 10 Jan 2010 13:04:01 -0600, Lostgallifreyan wrote: Hmm, on the subject of Chinese kings... "A king was pleased with the help of a warrior, and asked what the warrior would take as reward. Actually, this is ascribed as the reward offered by an Indian Prince to the inventor of chess (which was invented in India) which had become the Prince's favorite game. 73's Richard Clark, KB7QHC Yeah, but that connects with a much greater mismatch. :) |
Physics forums censor ship
On Sun, 10 Jan 2010 13:43:09 -0600, Lostgallifreyan
wrote: Hmm, on the subject of Chinese kings... "A king was pleased with the help of a warrior, and asked what the warrior would take as reward. Actually, this is ascribed as the reward offered by an Indian Prince to the inventor of chess (which was invented in India) which had become the Prince's favorite game. 73's Richard Clark, KB7QHC Yeah, but that connects with a much greater mismatch. :) As Paul Harvey would say "and now for the rest of the story" The inventor asked for this reward as you described and when the Prince discovered the cost, the Prince (using your analogy) mismatched the inventor's head from his body. No doubt something all inventors should consider as the price at some level.... 73's Richard Clark, KB7QHC |
Physics forums censor ship
Richard Clark wrote in
: On Sun, 10 Jan 2010 13:43:09 -0600, Lostgallifreyan wrote: Hmm, on the subject of Chinese kings... "A king was pleased with the help of a warrior, and asked what the warrior would take as reward. Actually, this is ascribed as the reward offered by an Indian Prince to the inventor of chess (which was invented in India) which had become the Prince's favorite game. 73's Richard Clark, KB7QHC Yeah, but that connects with a much greater mismatch. :) As Paul Harvey would say "and now for the rest of the story" The inventor asked for this reward as you described and when the Prince discovered the cost, the Prince (using your analogy) mismatched the inventor's head from his body. No doubt something all inventors should consider as the price at some level.... 73's Richard Clark, KB7QHC Funny, nice use of 'mismatched'. I don't think I'm much of an inventor, the couple of things I came up with were small (zero-crossing switch, and analog modulated laser diode driver, laser power meter gain stage and scale/offset tweaker), built partly by trial and error, but they all worked reliably when I'd otherwise have needed bigger, more elaborate and more expensive answers made by other people. But likely have probably nothing to offer than can't be had better elsewhere. What they did do for me, generally, was firmly establish cost as an engineering unit. One day we might even measure it with an SI unit. Ò^O |
Physics forums censor ship
On Sun, 10 Jan 2010 14:57:43 -0600, Lostgallifreyan
wrote: analog modulated laser diode driver This is no slight accomplishment! 73's Richard Clark, KB7QHC |
Physics forums censor ship
Richard Clark wrote in
: On Sun, 10 Jan 2010 14:57:43 -0600, Lostgallifreyan wrote: analog modulated laser diode driver This is no slight accomplishment! 73's Richard Clark, KB7QHC Well, I have to be honest and say that I haven't truly finished it. :) It's based on an LM317. I have this LM317 fetish based on admiration for the old POW radio ideas, I really think it's cool that such a ubiquitous device can be applied so perversely to such amazing unintended uses, and given its chances of being found, designs based on it could be buuilt even if much of civilisation were 'bombed back to the stone age'. On a more prosaic level, it's dirt cheap, powerful, easy to build with, and contains useful features. The driver worked in my initial test to 50 KHz, better than the 10K most analog mod drivers seem to favour. I tested it with a square wave and the edges were sharp with no overshoot if I didn't push it too hard, and did some filtering with low ESR tantalums for supply decoupling. I later discovered LTspice. :) I modelled it with that and quickly saw the same waveshapes my 100 MHz scope had shown me, which was a nice reality check that proved that LTspice could likely similaute the design and let me improve it before rebuilding. I devised a circuit that cannot be overdriven, attempts to do so merely broaden the peak at max amplitude, it cannot overshoot, and will modulate to 200 KHz. The proof is in the pudding but the truth is I never got round to baking the pudding. Bought a slower version of the op-amp I needed but got mightily disillusioned about the laser show thing and felt that I'd either build it and gain nothing personally from it, or no-one would even care. Given what I'd seen, I think this is genuinely true, few would. I hadn't even decided if I was going for SMT or through hole, and it's a tough call because available parts seem to force a hybrid... Like the pitch-to-MIDI system I wanted to build as an adapted version of Doepfer's R2M control system, it got put on the back burner. But I spent a couple of years pulling together all the tooling and design files to do it, and when I find something to motivate me, I intend to finish both these projects. I think this is what's drawing me to SWL. The present stopped compelling me, so in a way I'm drawing on something that endured from further past, as a way to revive the spark that got me as far as I did get. I never found a way to gauge what I do, because most times I find little to suggest that what I do has anything that people can't find better elsewhere just by throwing money at it, and as they usually have more than me I tend to think they're probably right. But if I can find enough motivation just to do it even though it might amount to nothing, I will do it because I don't know what else I'm good for. Long spiel, but I think I needed to, as part of whatever I have to do to make it happen. Like Mulder, I want to beleive, I guess.. |
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jaroslav lipka wrote:
On Jan 10, 11:58 am, tom wrot He has never designed, never built, and never tested anything that performs like his claims. Tom As you are so fond of saying, "you made the claim, you prove it", or is you claim as empty as you head. I have never said that, not even once. So how could I be fond of saying it? And Art has also not once posted a single measurement, a single equation or a single design. And you have never done anything but snipe. Yes, so do I, but I also occasionally make contributions, and my claims have always had numbers and measurements behind them. Do you know what measurements are? Jaro |
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