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Messages 589 - 618 of 839   Oldest  |  < Older  |  Newer >  |  Newest
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589
Is it possible to make an ordinary MOSFET a sensor without modifying anything (the gate, the materials, & etc.)? The ordinary MOSFET I mean here is just a...
weimoug
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Sep 5, 2008
5:13 am
590
Normally one starts with what you are trying to sense... Are you starting with a commercial molded transistor, or are you making your own die? If it is a...
Douglas Butler
sherpadoug
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Sep 5, 2008
3:44 pm
591
Transparent glass-bodied diodes like the typical orange glass 1N4148, and others, are affected by light (I doubt the sensitivity is documented in a...
Murray Leshner
murrayatupto...
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Sep 5, 2008
9:42 pm
592
Maybe there are 'smarter' analysis tools now, but years ago I found MOSFET's frustrating for predictive calculations - they seemed to have much wider variation...
Murray Leshner
murrayatupto...
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Sep 5, 2008
11:42 pm
593
Actually this is my project in school. My supervisor asked me to find out the parameter (temperature, light, pressure, etc) that can be sensed by an ordinary...
weimoug
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Sep 6, 2008
8:06 am
594
OH...a different picture emerges.... If you can see (with a microscope) the typical details one can see on chips, dies etc., it can be exposed to light....
Murray Leshner
murrayatupto...
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Sep 7, 2008
7:18 pm
595
Since the MHD flow/speed sensor topic was brought up in this group, here's a TI application note about flow sensors: ...
Nick Alexeev
kender_a
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Sep 20, 2008
10:03 pm
596
Does anyone know how a bullet chronograph works? They seem to have two triangular hoops that the bullet passes through. But I can't see how the bullet is...
Douglas Butler
sherpadoug
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Sep 25, 2008
7:08 pm
597
Apparently it is infra-red optical with the transmitter & receiver looking up at a ribbon of white screen looking for a slight flicker....
Douglas Butler
sherpadoug
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Sep 25, 2008
7:47 pm
598
... I've seen two styles. One simply cuts through two wires with the bullet, starting and stopping a fast counter. Another, perhaps what you refer to, is an...
Tom Becker
b19063
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Sep 25, 2008
7:47 pm
599
Colleagues, The device is a flow indicator which works with IV tubing. Roughly, it looks like this: ...
Nick Alexeev
kender_a
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Sep 30, 2008
5:29 pm
600
Paddle wheel sensors are not known for their accuracy. They also tend to be nonlinear, showing higher turns per liter at higher velocities than at lower...
Douglas Butler
sherpadoug
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Oct 1, 2008
8:35 pm
601
Often, catheters have heating parts and they need irrigation – a constant stream of saline to prevent the surrounding tissue from drying out. The rate is...
Nick Alexeev
kender_a
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Oct 2, 2008
6:48 am
602
my 2 semester project i started this semester is an RC blimp that we are going to make autonomous. part of the project involves recognizing that it is above a...
flinxsl2
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Oct 5, 2008
7:09 pm
603
You could put an IR LED on the target pointing upwards and a phototransistor on the blimp. When the blimp sees the cone of light from the target, it descends....
Nick Alexeev
kender_a
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Oct 5, 2008
7:47 pm
604
... I second the part of the constraints... What type of traget can you (or have) to use? Donald...
Donald Kinney
minot907
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Oct 5, 2008
9:48 pm
605
If you could put a camera on the blimp you could optically center the target LED. You could also use acoustics. Because of weight I would put a pinger on the...
Douglas Butler
sherpadoug
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Oct 6, 2008
5:20 am
606
some of you are thinking the same as us. we are going to be flying it indoors, because its going to be a small blimp(6 to 8 feet), so GPS is out. we are...
flinxsl2
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Oct 7, 2008
4:41 pm
607
... To determine where the blimp is in the indoor environment would be a tough part. If you figure out how to do it well, you could extend your solution to...
Nick Alexeev
kender_a
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Oct 19, 2008
12:38 am
608
CFP - 5th International Colloquium on Signal Processing & Its Applications 2009 Dear Sir/Madam, The Advanced Signal Processing (ASP) Research Group, Faculty of...
ihsan_yassin
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Oct 24, 2008
7:09 am
609
I have a lab project and we're measuring the deflection of a 12"x12" steel plate (1/8" thick) due to an explosion. Optical instruments and those requiring long...
nfbudler
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Oct 24, 2008
5:15 pm
610
@&^#& - I just typed a very long reply and got an abnormal response after posting - so I don't know what happened to my response. I think that any deflection...
Murray
murrayatupto...
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Oct 25, 2008
4:46 pm
611
Hello All, I'm new to this forum and I am seeking some information on a certain ultrasonic transducer element, PE-50. It's a 1" diameter ceramic piezoelectric...
dunl1254
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Dec 1, 2008
12:53 am
612
Hi All, I am working on the Design of a Magnetic Sensor, this sensor is a part of security system. This sensor should be able to detect human intrusion, can...
Muhammad Saeed
ghauri_pakistan
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Dec 1, 2008
6:54 am
613
You could have a coil generating a high frequency field, and then use a sensing pick-up coil to measure variations in this field. However, this forms pretty...
Gavin Dingley
dingley76
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Dec 1, 2008
5:29 pm
614
The human body has a miniscule magnetic signature. Why do you want to use a magnetic sensor? You will probably pick up watches, belt buckles, rings on...
Douglas Butler
sherpadoug
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Dec 1, 2008
5:29 pm
615
A plate would work but an outer ring around the room at various field projection  points that bounce back to the plate will indicate where the intruder is...
sue chappelle
matrixmodell13
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Dec 1, 2008
7:17 pm
616
hi all i want to do Dessertation on Mems Based magnetic Pressure Sensor Request you to guide me how to proceed for the same. thanks Shafali Jagga...
shafalijagga
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Dec 7, 2008
5:55 pm
617
... Shafali, Start with the name -- I think you mean dissertation, not Dessertation. See: http://en.wikipedia.org/wiki/Dissertation. Profs can get really...
Michael
michael_grol...
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Dec 8, 2008
4:26 am
618
Colleagues, A lot of us are using PICs and AVRs. Some of us haven't picked their favorite uC family. ...
Nick Alexeev
kender_a
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Dec 11, 2008
5:04 am
Messages 589 - 618 of 839   Oldest  |  < Older  |  Newer >  |  Newest
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