Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [avalanche]

13 questions
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3 answers

Is this avalanche rugged MOSFET suitable for linear operation?

I would like to create an active load which draws current(4 to 6A) from a 12V battery. Unfortunately, the shipping costs and delivery times have prevented me from buying Linear FETs directly from well known manufacturers. Instead, I have found this…
A.H.Z
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4
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1 answer

Distinguish if this component is a PIN Photodiode or an APD Avalanche Photodiode

I am experimenting with a DFB Laser salvaged from a scrapped GPON Router. Laser works fine, but it comes with what looks like a "Built in InGaAsP monitor photodiode" incorporated into the laser. Here is a picture of how it looks like: Pinout…
Ezequiel Adrian
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Identifying / distinguishing between PIN photodiode and avalanche photodiode

Is there any way to determine whether an unidentified photodiode is a regular PIN photodiode or is an avalanche diode? The photodiode is part of a small scintillation detector unit.
Eric Slighton
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Broadband RF noise source/generator

I’m try to make a wideband noise source up to 150MHz, around 0dBm and as flat as possible, based on diode’s avalanche mechanism, plus some buffering and amplification stages. My questions: What is pros and cons to use zener diode or B-E junction of…
GR Tech
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1 answer

Avalanche relaxation oscillator biasing resistor

I've tried the circuit in this article. It works very well and I've obtained 2ns clear pulses at 150 V (the main issue was to find the right avalanche voltage, which turned out to be 150-160V for my 2n3904 transistor). While the basic principles of…
MikeTeX
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What is meant by the "one-shot" avalanche rating of a transistor?

I'm using the P-channel half of an IRF7343PbF as a high-side switch to actuate the coil of a Gigavac P115 relay. I would like to be able to turn off the relay as quickly as possible after detecting an overcurrent fault downstream, in order to break…
pericynthion
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True Random Number Generator by using avalanche breakdown

I am trying to build a TRNG using avalanche breakdown for randomness. I am developing a circuit as looks like this.(https://web.jfet.org/images/rng-circuit.gif) Before I complete the circuit i wanted to be sure that my transistors generate random…
Myeou
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1 answer

Using and Understanding Avalanche Photodiodes

I have a low light source that I would like to convert to an electrical signal. I have tried the pin silicon photodiodes without success. I believe I need an Avalanche Photodiode to make my project work. I am not an electrical engineer, so I need…
Lambda
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Avalanche photodiode current limiting/optimum APD bias point indication

I am trying to design an avalanche photodiode driver using the MAX1932 APD bias supply IC. Everything looks pretty understandable except selecting the APD current limit. I looked through all APD datasheets and I cannot find any information that…
user3500960
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Why there is a "Case" pin in 905nm APD?

In our research on minimizing the blockages in visible light communication using IRSs, we use a MTAPD-06-013/014/015/016-905F 905nm avalanche photodiode which has 3pins. What is the purpose of the "case" pin, and how does it connect to the…
Asha Rajapaksha
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Driving Avalanche Photodiodes (PCBs)

I am using Avalanche Photodiodes and I was told that they use a much higher voltage then standard photodiodes and I was wondering if I need a High Voltage PCB to drive them? I am currently just using Ardunios but I'm guessing that I will need…
James
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Does LTSPICE automatically include avalanche parameters in its power dissipation measurements?

Does LTSPICE power calculation window like this take into consideration MOSFET avalanche parameters and include them into the overall average power value? That particular image is for a resistor not MOSFET.
user33915
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How do I connect an avalanche photodiode to an Arduino Uno?

I understand that there was one other question regarding avalanche photodiodes, however I am looking more for connecting my APD to a microcontroller (Arduino). https://www.edmundoptics.com/testing-detection/detectors/avalanche-photodiodes/ As I…
user185230