In a 4-wire (kelvin) measuring system, why are there "sense" resistors? I understand that because there is very little current on the sense line there is no voltage drop. What purpose do they serve?
That helped a lot. Thanks for all the input. This is a great forum!
http://photos.imageevent.com/crossfamily/campingatsunsetbay/large/ConsultClk_w_470ohms.PNG [Broken]
Ah yes, that makes sense. Hadn't thought of that.
Okay, this is starting to make sense. So, would a possible fix be to add a 1k resistor to the output causing it to be loaded at all times? 1k load when turning on, 2k load when turning off.
1k resistor on drain. I didn't think 150k was high enough frequency to worry about reflections although I know as the wire length increases, it's more likely to become an issue.
Just noticed that my probe shows 115pF on 1x and 16pF on 10x. However, when I put a 22pF or 100pF cap to ground in parallel with my probe set to 10x, the overshoot increases??
I'm working on a microcontroller project where I'm sending out a clock signal at 153kHz and then converting it to 0 to 12V levels using a n-channel MOSFET. The wires are approximately 2 feet long after the conversion. I was disturbed by the excessive overshoot I was seeing on my USB scope. I...