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06/23/2011

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I only received one fairly mild admonition from Bob over the years we communicated. I was having a problem with drift in a precision voltage regulator, I had mentioned it to Bob off-handedly and he asked to see the schematic. So I sketched up a schematic and e-mailed to him, awhile later, Bob sends me an e-mail telling me I had made some really piss poor resistor value choices in the circuit! What?

I looked at the sketch and realized that I had put the wrong resistor values on the sketch from another circuit version, they weren't the same values as the actual circuit. I sent him a corrected sketch with a sheepish apology for the wrong values. He was right, those values weren't good at all for this one. We decided there was enough of a temperature coefficient miss-match between the two references to be causing the drift, I had to do a little part selection to get better drift tracking.

I will sorely miss him!

Beautiful and deserved. Williams' house was a little bit of magic, and your description of The Tapestry nailed it.

If you want to know how to solve your middle age health problems, send me an email. I have been studying human nutrition for almost 40 years. I have 48 years of engineering experience, a lot of it with analog. I worked for Electronic Associates back in the '60s and continued using analog computers for 14 years. I am 69 and expect to continue working another 40 years. I do not have any health problems. The last time I saw a doctor was 30 years ago.

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*A cartoonist once depicted "analog" engineers in a "digital" world ― like Nathaniel Hawthorne’s infamous sinners ― as wearing a badge of disgrace. Indeed, trading on the notoriety, "The Scarlet A" was a long-running column on the Planet Analog web site The blogs on this page may be closer in spirit to the columns once published in Computer Design magazine, under the umbrella, "Analog designers have more fun." There, an apps engineer talked straight-faced about getting his parts designed into a sewage treatment facility. Another likened the simulator that failed to a country-and-western ballad. The Letter-in-Scarlet blogs may turn out to have nothing to do with analog technology or business. But it makes for an interesting starting point…
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Special Thanks to Lou Covey of VitalCom PR for helping me set up this page. See Lou's own blogs at State of The Media.
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