DaveE's latest activity
-
DaveE replied to the thread Underwater piezoelectric sensor array receive sensitivity.Other engineer's designs aren't always the best. They may have been ignorant, or more likely they had constraints that aren't applicable... -
In analyzing the mechanics of deformable membranes (such as, for example, the deformations and stresses within an automobile tire...
-
DaveE reacted to tech99's post in the thread Underwater piezoelectric sensor array receive sensitivity with
Like.
I would endorse the reply #5 from DaveE. Piezo devices have very high resistance but some capacitance. There is no disadvantage in... -
DaveE replied to the thread Underwater piezoelectric sensor array receive sensitivity.I guess you could try summing the currents from the parallel pzts into a low input impedance amp. But pzts are high impedance devices, I...
-
DaveE reacted to nauman's post in the thread Underwater piezoelectric sensor array receive sensitivity with Like.
Actually, i came across some underwater echo sounder transducers in which multiple piezo electrical transducers were hardwired in the...
-
DaveE replied to the thread Underwater piezoelectric sensor array receive sensitivity.I wonder why you care about a combination. Yes, one amp can work. But, as others have said, 3 are better. They aren't that fancy, just...
-
DaveE replied to the thread Underwater piezoelectric sensor array receive sensitivity.It should work if you wire them in series. I wouldn't worry too much about impedance matching since your sound waves will (I think) be...
-
DaveE replied to the thread In the early days of electricity, they didn't have wall plugs.google, dude. My first search result... https://en.wikipedia.org/wiki/History_of_AC_power_plugs_and_sockets
-
DaveE replied to the thread I Why can’t photons “pile up” to eject an electron?.Multiphoton imaging is a well established tool. Here's a review for GI docs, for example...
-
DaveE reacted to willyengland's post in the thread I Why can’t photons “pile up” to eject an electron? with Like.
A multi-photon absorption might happen I think under extreme conditions like a strong laser.
-
DaveE reacted to Averagesupernova's post in the thread Following up on the recent thread about Earth Resistance measurements with Like.
In the USA no matter how old the service is there is nothing stopping me from updating to a 'safe' installation by adding three wire...
-
DaveE reacted to bryantcl's post in the thread Job Skills Resume Help and Career Guidance - EE Grad with Like.
Just a few thoughts as I was on the job market recently (within the past year). Listing skills first before employment history for an...
-
DaveE replied to the thread I Non-orthogonal bases.Yes. Also, people (like me) often are assuming linearity, which isn't always true.
-
Just to point out, though likely obvious to most, that we need to have an inner-product defined in order to define or talk about...
-
Agreed. Many of the "paradoxes" in relativity stem from unknowingly importing intuition from orthogonal coordinates into...