Hi there again guys!
Quote:
|
Originally Posted by KnightElite
I agree, get all the datasheets.
The project seems moderately complicated, but not overly difficult. I'll check back and take a look again later once you have posted the PDFs and suchlike, but all of the individual circuits should be fairly easy. You are taking some kind of EE classes in university I take it?
Anyway, many of the simple circuits required, such as a linearization circuit, will be explained in the datasheet for the IC you are using. Depending on what kind of photodector you are using (or have to use), you may be able to find one that matches all your needs in a single chip. If not, most of them are photodiodes, so the amount of light they receive adjusts the current they transmit through. By running this current accross a resistor, and measuring the voltage drop, you can get your 0-5V output.
|
Yes, i am taking a EE class in university, and things are starting to get complicated
So you are saying that the linearization circuit should be a IC?
This LDR varies Resistance directly with the amout of light, i have decided to put it feeding a transistor to limit the current that pass trought it, and reduce heating.
This is working quite farelly well, however, it is not linear, showing an inverse exponencial curve on tension (good english anyone?).
We decided to let it stay non-linear for now, and move on to task 3 (we are getting late
)
So, me and my friend are stuck at task 3, we are still trying to understand how the hell this IC works ( IC ADC0801).
If you guys can give us some imput on the linearization circuit and, on this decoder, we would be thankfull to you guys
.
Here's the PDF's:
Tl494
TLP521
ADC0801 A/D Converters
DAC0800
DT2801 (unnecessary i think)
That's it. Tomorrow i'll post the schematics of what we made so far. Cya!