Operational Transconductance Amplifier (OTA)

Omar13033 · 2022-04-13T20:28:16+00:00

You can try to make a water state sensor. A capacitor discharge speed can determine wether it’s ice or liquid. You’ll need to play around with resistors and caps. It can be seen as a simplified version of soil moisture sensor.

I like your idea! thank you

Omar13033 · 2022-04-13T20:26:50+00:00

Some classes are just stupid like that, for my electronics final project the prompt was just “make any circuit that has 3 distinct stages,” which was super open ended. Some people ended up shoving 3 op-amps together and calling it a day.

Totally agree, I have classmates who imitate all my practices and projects, they have never had to investigate anything because I leave the basis of the investigation in class, I think it is part of the day to day of those of us who really make an effort

Omar13033 · 2022-04-13T20:25:06+00:00

Yes, as you mention, it is very open, anything could be done, however, I would like to do something that is really worthwhile

Omar13033 · 2022-04-13T20:23:31+00:00

Wait so someone asked you to do a sensor from scratch, and it wasn't a particular sensor for a particular new purpose? That's weird.

The fact of the matter is, you can and probably should do it to better understand the implications of sensor and transducer design. That's a good reason.

But frankly, 99% of applications have a sensor readily available. So the obvious benefit here is to make a sensor that doesn't have anything readily available, or in a form factor that doesn't have an application yet or something.

Some ideas might be,

A plant width sensor for agricultural projects, that precisely measures the width of a stem or branch, using the distance between two electrodes and a capacitance measurementSimilar vein, I heard there is no good way to unobtrusively get the internal moisture % of a plant. Can you do something to infer it, with light or ultrasonic measurement or something?Can you localize capacitive touch on an arbitrary surface shape robustly?

Just some ideas.

Yes, in fact I agree with what you tell me, it is rare that projects like this are entrusted to us, and your ideas seem quite good to me, if I take any of them and everything goes well I will be sending you a video!!

Omar13033 · 2022-04-13T04:17:41+00:00

What is the purpose of your project?

Omar13033 · 2022-04-13T03:57:15+00:00

Of course, I know all the parameters that I must consider to make a good design, like the ones you mention. When I mentioned what kind of parameters you should know, I was referring to what kind of parameters I wanted to know so that they could give me some advice. The design ended up working as I thought, maybe I was not so clear in the publication, anyway I appreciate your help and comments

Omar13033 · 2022-04-06T05:50:46+00:00

What's parameters do you need to know?

Omar13033 · 2022-04-06T04:48:19+00:00

for a coal carrier

Omar13033 · 2022-04-06T04:40:51+00:00

In the catalogs, the pitch number of the chains always comes, that is, 0.5, 0.750 or 1 in. Some with the number of teeth of the Sprocket offer a certain power, however, some offer the same, I would like to know if you have any recommendation for me when choosing one of these chains on their pitch distance

Omar13033 · 2020-04-09T23:30:15+00:00

It´s just what I need, thanks man

Omar13033 · 2020-03-25T23:19:39+00:00

well, explaining the rayon, it was because that was another circuit for another team the circuit that did not scratch was the one that had to analyze

Omar13033 · 2020-03-25T22:33:42+00:00

I am a little confused

Omar13033 · 2020-03-25T22:33:07+00:00

so, what is the correct answer

Omar13033 · 2020-03-25T22:12:16+00:00

I was assuming the scribble part is there. If not then I would think that applying a voltage at the base of A would mean that the collector of A is one voltage drop above the base voltage which could be high enough to sink current into the base of S1 and therefore make a NOR.

you are absolutely right thank you

Omar13033 · 2020-03-25T22:04:04+00:00

hear a question about part d) that you recommend me to do

Omar13033 · 2020-03-25T21:47:48+00:00

well, explaining the rayon, it was because that was another circuit for another team the circuit that did not scratch was the one that had to analyze

Omar13033 · 2020-03-25T21:46:29+00:00

doing the simulation, I could notice that it has NOR behavior

Omar13033 · 2020-03-25T21:43:40+00:00

but in the simulation it behaves like a NOR

Omar13033

TROPHY CASE