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First: I know precisely what a feedback loop is. I build them for a living. A typical feedback system has the following: 1. An input. (That's...
Just a couple of comments. First: Suppose that one has a malfunctioning cruise control switch. Take your pick: busted wires (an old CPO I had in...
Yep. And, contrary to halfmoonbay's assertion, it is not required that both analog signals end up on the same A/D converter or whatever is out...
Harold, it's a simple voltage divider. Basic idea: Suppose that there's a 1 kOhm resistor to 5V over at the ECU. The bottom of that resistor goes...
In addition, I'd like to see where VPA and VPA2 end up, presumably after they've gone through a little input filtering. On the same device? If...
Ahem. The nominal difference between the primary and secondary is 0.8V. Gilbert stated several times, emphatically, that as little as 20 mV would...
OK. Let's have fun with this. I'm used to microswitches that have that little plastic button that causes a snap/unsnap operation inside the...
All true, but there's one important point that you may have missed. During the spoken testimony (but not in the report) Dr. Gilbert stated that,...
First time I've ever met an ESD designer. Hi! Well, I mainly muck with -48V/-60V systems. We do lightning surge testing at +-500 V differential...
All right. I've sat through the webinar. Interesting. Two CPU's, watchdogs both ways, and so forth. Important point #1: There are two CPUs in...
Terrified, right. Gallons of adrenaline running through her veins, absolutely right. I do not know, I've been in a couple of situations where I...
Agreed. And, frankly, given Ms. Smith's eyewitness account, it sure doesn't sound like a bad pedal. And you're right - if the thing were really...
Look: Gilbert found himself a hardware design flaw. If he's right about those two signals going to a common analog piece of hardware in the (I...
Harold, that depends. Modern uP's and uC's have watchdog timers - if the timer isn't strobed periodically, a full reset is applied to the...
First things first: I listened to that hearing. One of the things that Gilbert said was that the outputs of the throttle sensor went to one device...
Hobbit, I think I have a little problem with your "well-protected cabin environment" comment. I build telecom equipment for a living and we have...
Oh, boy. What a mess. So, they put in a 0.8 V difference between the active and duplicate sensor outputs, then allowed 0.02 V (!!!!) difference...
In Ye Olden Days with gravity fed/one direction fuel into a carburetor it was fairly common to carry a little puddle of water at the bottom of the...
The answer is: The Start Button is not connected to a magic box that puts a knife through the power feeds. It's connected to a computer. And that...
Gol Dang It. OK, you have now found yourself hooked to a real, live electrical engineer. I design and build electronic circuit boards for real,...
