Yes it does. Calms it right down. The pulse frequency eventually can't overcome the mass of the middle magnet and things smooth right out. It helps to make adjustments along a range of rpms however so damping would be very nice. I will try a copper sleeve. I could sleeve the whole plastic...
As described it actually does, and quite nicely, with the condition that it's level. Perhaps not "differential" precisely. As I said, I'm not trained in this vernacular. I'm trying to find the point of balance ONLY. I'm not interested in measuring any difference in that balance. Leveling the...
nn20,307 / 2,524
Staff: Mentor
"Is it imperative that the entire tube be transparent? You might try covering only a portion of the tube with copper."
but even the weak eddy current of a complete copper tube would be insufficient to damp against pulses. What's needed is something akin to...
friction damping the magnet itself would only work under ideal conditions. any irregularity or contamination on the tube inner wall would ruin the sensitivity of measurement/movement
also I am familiar with damping magnet in tube with eddy current. But in this case the eddy current would be insufficiently strong to dampen pulsation, and the tube must be clear glass or plastic.
another method possible is using a sufficiently large volume canister in line with each input tube...
I'm not sufficiently educated on this stuff to properly describe the question. Sorry.
Consider the following. a primitive gauge is set up in order to observe the differential air flow between two sources. Assuming static pressure linearly corresponds to differences in flow. so balancing air...
I did a quick knock up of this.
I'm measuring the gas pressure on my furnace.
Is there anything immediately wrong with the manometer as you can see it in the image?
There is a valve at the bottom that is no obstruction to the flow. It's there only to drain the manometer for easily...
bumpity bump. c'mon guys. I'm not even schooled in physics past the 11th grade but i know this has to be about as rudimentary as it gets. 109 views and no bites? really? who inhabits these boards?:smile:
Hello.
I am not skilled in math or physics. I'm interested in building an inclined manometer accurate only enough to measure water column (w.c.) inches scaled to .5 w.c to about 10 percent accuracy.
A very basic manometer can be built to measure inches of water with a utube of small...
Look folks, before you get your panties in a knot, know I consider myself a b- level electrical engineer. I post to a forum, a forum called "Physics forums" with the expectation of fielding advice from something more than b minus level enthusiasts. Maybe I'm just expecting too much. Series...
"quia si nunquam petere"
(if you must ask you may never know)
Sophie, do you honestly misapprehend what I've been "after"? Have you, or anyone else responding to this thread taken a moment to Google "reverse polarity protection" to see "what I'm after"? It's not that obscure or esoteric...
Screw it. This turned out to work perfectly as a temporary "bench-testing" failsafe on a separate little board. Correct polarity... all's good. Reverse polarity... led warning and nothing touches the board (amplifier).
Once I get everything sorted out and tested on the bench and have...
It adds one more possibility for error between the power source and the amplifier. I mentioned I'm bench testing. A few amplifier modules and half a dozen various SMPS.
Guess that's a "no" then?
What if I take a less permanent approach? I'm really only using this for the testing phase, it won't be part of the final project since it will be hard plumbed to an internal xformer.
So would this temporary circuit protection circuit work ok?
The concern...