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Recent content by archiees

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    Origianl Shot noise paper

    Does anyone has a pdf of original Shot noise paper by Schottky-: AU: W. Schottky TI: Über spontane Stromschwankungen in verschiedenen Elektrizitätsleitern SO: Annalen der Physik VL: 362 NO: 23 PG: 541-567 YR: 1918 CP: Copyright © 1918 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim ON: 1521-3889 PN...
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    Temperature Sensor for 4 Kelvin

    The lower limit of these sensors is greater than 4 kelvin which is equal to -269 degree celcius. I need to something that will go to that cryogenic temperautres.
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    Temperature Sensor for 4 Kelvin

    Please, can you tell me more? What kind and do you have alink to the specs?
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    Temperature Sensor for 4 Kelvin

    Hi , I need to do some gain measurements of my MESFET amplifier at around 4 Kelvin. To measure the temperature I was hoping to buy Silicon diodes from Lakeshore - just realized that they are very expensive ($500 bucks for the calibrated ones). Is there a way i can rig up something in the lab...
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    Coax for vacuum application

    Hi, Does anyone know if i can get some kind of caox cable for UH - vacuum applications?
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    How to do noise analysis in Cadence?(50 points)

    cadence transient noise Hi, Section 2-23 of the PSpice A/D Schematics Version User's Guide describes very nicely witha n example how to do the noise analysis. You can access the manuals clicking on help-> manuals in the Top menu of the Capture-CIS.
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    Methods for TTL line protection

    Re: TTL line protection Hi, What about using the opto-isolators? Have you thought about them.
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    Where can I get 3Sk164 and 3SK166?

    Re: need 3Sk164 and 3SK166 Thanks VSWR. However, which ever i tried have some minimum purchase requirement of greater than $300 US. I need only atmost 10 of each:(
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    Where can I get 3Sk164 and 3SK166?

    need 3Sk164 and 3SK166 Hi, i need the sony devices which are obsolete now, 3SK164 and 3SK166. Please, does anyone know where I can get may be 10 of them. thanks
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    GaAs FET with linear channel

    I have to design a preamp using GaAs FETs which will sit in a very strong magnetic field 14 Tesla. The magnetic field (B) if at an angle to the channel will exert a force to the flow of charge carriers from Drain to source. To avoid this I plan to align the FET channel in the direction of the...
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    Killer Input capacitance

    Thanks Suria, I want to try the folded cascode. I read few things about folded cascode however, it is still not clear how it wld isolate the input capacitance in BW determination - for my TIA. Please if you have a reference to any article/books. PS: My signal frequencies of interest are 10 KHz -...
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    Killer Input capacitance

    hi, I am designing a transimpedance amplifier which needs to amplify around 100pA of current to few mVs , the signal frequency is from 10Khz to 10 Mhz. I start with a 1M ohm resistor to convert this current into voltage and use a FET in a source follower configuration for pre-amplification. My...
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    Will Groud Plane capacitance delay my digital signal?

    Groud Plane capacitance I am designing a printed circuit board that has traces carrying TTL triggers from a national instrument timing board. My question is : will it be a bad idea to put a ground plane in the secand layer. I was thinking the capacitance of the traces due to this ground plane...
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    Orcard Layout plus foot print library

    orcard hi, I need a list of footprints available in layout plus standard libraries, so that i know which footprints i have and which ones i don't. I know how to make footprints myself but it would be waste of time to reinvent the wheel. In the Users manual they keep refering to "OrCAD Layout...
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    Protecting my Analog output card

    thanks guys very useful information for me. Though, one more question, i found these Channel protector lying in my lab. https://www.analog.com/en/prod/0%2C2877%2CADG467%2C00.html Can i use these in series with my signal wires? The good thing is in one package i can have 8 channels protected...
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