Search Engine www.edaboard.com

Photo Diode

Add Question

144 Threads found on edaboard.com: Photo Diode
hi ! my thesis is about designing a high frequency transimpedance amplifiers. Tia is used in optical communication links to convert the current from photo-diode to voltage . i searched a lot for specifications of a Tia that is used in Li-Fi but i got nothing. can anyone help me ? and i have another question how can i download full description for
hi ! my thesis is about designing a thigh frequency transimpedance amplifiers. Tia is used in optical communication convert the current from photo-diode to voltage . i searched a lot for specifications of a Tia that is used in Li-Fi but i got nothing. can anyone help me ? and i have another question how can i download full description for
no such part. but you could moldulate a laser diode, run a few inches of fiberoptic cable, and hit a photo detector. that would be over 100 dB of isolation if you packaged it properly, but you would have linearity, noise, and signal level issues to fight.
HOW TO ASSUME IDEALLY FACTOR N=1 ,N=2 to two-diode model for photo voltaic modules?
Do you measure its output as current, or as voltage? To measure output as current, you need a loop of some kind for the current to flow around. It's likely that photodiode output is easier to measure as a voltage, instead of as a current. photodiode schematics commonly show one terminal going to a high-impedance input (such (...)
i try to simulate an avalanche photo diode by silvaco atlas. how can see the dark current and illuminate current? if i need to use another solving method help me please. region num=5 material= InP y.min=2.3 region num=6 material=air y.min=-0.3 y.max=-0.1 electrode name=anode material= aluminum x.min=16 x.max=19 y.min=-0.3 y.max=0.1 elec
After reviewing the photo diode links in post #4, I really ,don't know which measurement principle is addressed with "laser detection diode". Laser distance measurement instruments and OEM modules with 1 mm accuracy are widely available these days and are promising absolute distance values without adjusting a triangulation setup. The (...)
Hi I am using a simple reverse biased photo diode with two stage amplifier The problem is that when the IR source is close to the photo diode this circuit is working fine, it amplifies the received signal in addition to a small 50HZ signal is super imposed on it but when the IR source moves away from the (...)
Hi, Im tracing out thickness detector circuit (attached herewith) in which first stage of op amp is used to convert photo diode current to voltage. Could nt understand the op amp configuration in second stage. is it a comparator? Kindly suggest me. 129341
Hi guys, if any one heard about photo diode "TFK S 186 P" pls comment here. Thanks, Biju
Hi, In my currently working organization we are going to start product with laser diode and detector. I want a basic document how laser diode will work and how we have set the light frequency or wavelength. and how photo detector will work. And what is the use of Spectrometer. Iam searching in net but iam not able to find a (...)
What is the input dynamic range of a typical charge sensitive amplifier (CSA) ? It is possible to detect 1.5 Million photo electron by a CSA ? If yes then what is the output signal strength of such CSA. These photo electrons are produced by some number of multi-pixel avalanche photo diode array which has around 1.5 Million (...)
My project is to detect the object passing through the photodiode and count it. But the problem is, the object passing the photodiode in fraction of seconds(in milliseconds) it makes very small amount of voltage difference in the output pin of the comparator. Google says we have to use transimpedence amp or so, I don't (...)
Hi I am using a simple non inverting circuit to amplify the output of photo diode. The problem is that the output is always inverted, even that I am using non inverting amplifier. I have tried using unity gain buffer and current to voltage converter and get the same result as well. Is there any explanation for that? schematic and s
It is not healthy to look directly into 100mA of IR LED. 95% is invisible 5% is visible due to bandwidth of the spectrum. The invisible part is caterogenic. - - - Updated - - - Any LED or photo diode , reverse biased to a -5V MAX should pick up a pulsed current. Bandwidth depends on Transimpedance amplifier
This is a really basic circuit but I am having trouble with it none the is actually BC517 on my real circuit and D1 is a SHF309FA-3/4 or alternatively a photo diode I got from ebay but am unsure as to its identity. Regardless I am getting a roughly 1V differentia
A photo would help to identify easily. Post a picture
An IR receiver usually uses a photo-diode or photo-transistor at its input. A photo-diode that is reverse-biased is fast because the bias reduces its capacitance. Light makes it leak current. A photo-diode with no bias is a mini solar cell that produces an output when lit. (...)
I am planning to try UART transmission using IR photodiode instead of TSOP. But the problem is that the photodiode is affected by sunlight. How can i solve these problems. Any body have tried this before ? I want your valuable suggections
Hello Everyone! I would like to simulate the S-parameters and noise of simple circuits Tx / Rx in the range of 30-500 MHz. I can not find a model in ADS (ADS Agilent) for PIN- photo-diode and laser diode (wavelength ~ 1.1 - 1.6 μm). Please tell where to find S-parameters / models to simulate the (...)