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Topic: FET


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  Field-Effect Transistor
When FETs are used in the audio output section of an amplifier, the Vgs (voltage from gate to source) is rarely higher than 3.5 volts.
When the FET starts to turn on, the voltage on the drain starts to fall (indicated by the falling green line and the point where the green curve intersects with the white line).
FETs are similar to bipolar transistors as far as packages and power dissipation go, and you can follow this link back to the bipolar page for more information.
www.bcae1.com /tranfet.htm   (1403 words)

  
 Clinical evaluation of functional electrical therapy in acute hemiplegic subjects   (Site not responding. Last check: 2007-10-07)
FET is an exercise program that comprises voluntary arm movements and opening, closing, holding, and releasing of objects that are assisted by a neural prosthesis (electrical stimulation).
FET sessions were sometimes performed without supervision after a subject learned how to position the stimulation electrodes correctly and how to appropriately train his or her paretic arm and hand.
FET sessions were performed 7 days a week within the rehabilitation institution since the study subjects were inpatients.
www.vard.org /jour/03/40/5/Popovic.html   (4203 words)

  
 Print All Sections: Family Effectiveness Training (FET)   (Site not responding. Last check: 2007-10-07)
The current version of FET was developed to work with families of pre-adolescents to foster parenting skills needed in American society before children had grown old enough to manifest the cultural gaps associated with problem behavior and drug abuse in Hispanic immigrant families.
FET helps Hispanic immigrant families with 6- to 12-year old children, particularly in cases where the child is exhibiting behavior problems, associating with deviant peers, or experiencing parent-child communication problems.
FET is designed to engage and retain a family in the program by focusing on the way the entire family functions and viewing the child’s problems as a symptom of cultural differences within the family.
modelprograms.samhsa.gov /print.cfm?pkProgramid=32   (1419 words)

  
 FET   (Site not responding. Last check: 2007-10-07)
FET consists of all education and training from NQF levels Two to Four, or the equivalent of grades 10 to 12 in the school system and National Technical Certificate One to Three in technical colleges.
Learners enter FET after the completion of the compulsory phase of education at Grade Nine or via the ABET route.
The aim is to ensure that FET is complementary to general school education and higher education and that there is synergy with initiatives and policies emanating from the Department of Labour on the development of skills.
education.pwv.gov.za /DoE_Sites/FET_Folder/FET.htm   (275 words)

  
 Llewellyn Encyclopedia: Fet Gede - the Vodou Festival of the Ancestors
Fet Gede - the Vodou Festival of the Ancestors
During the ceremonies of Fet Gede, there is always a spiritual procession to the cemetery, with ancestral services at the Cross of Baron, the lwa who is guardian of the cemetery, the crossroads, the bridge between life and death, and head of the family of Gedes (the ancestors).
By offering insight into the past, Fet Gede frees people from the patterns and habits they can so easily and thoughtlessly repeat, and prepares them for a better future where they can achieve happiness and greater richness in their lives.
www.llewellynencyclopedia.com /article/4291   (1329 words)

  
 field-effect transistor - a Whatis.com definition - see also: FET   (Site not responding. Last check: 2007-10-07)
A field-effect transistor (FET) is a type of transistor commonly used for weak-signal amplification (for example, for amplifying wireless signals).� The device can amplify analog or digital signals.� It can also switch DC or function as an oscillator.
The junction FET has a channel consisting of N-type semiconductor (N-channel) or P-type semiconductor (P-channel) material; the gate is made of the opposite semiconductor type.� In P-type material, electric charges are carried mainly in the form of electron deficiencies called holes.
The FET has some advantages and some disadvantages relative to the bipolar transistor.� Field-effect transistors are preferred for weak-signal work, for example in wireless communications and broadcast receivers.
searchsmb.techtarget.com /sDefinition/0,,sid44_gci213961,00.html   (331 words)

  
 FET - a Whatis.com definition - see also: field-effect transistor   (Site not responding. Last check: 2007-10-07)
A field-effect transistor (FET) is a type of transistor commonly used for weak-signal amplification (for example, for amplifying wireless signals).
The junction FET has a channel consisting of N-type semiconductor (N-channel) or P-type semiconductor (P-channel) material; the gate is made of the opposite semiconductor type.
The FET is not, in general, used for high-power amplification, such as is required in large wireless communications and broadcast transmitters.
whatis.techtarget.com /definition/0,,sid9_gci213961,00.html   (520 words)

  
 FET's and H-BRIDGE's - www.ezboard.com
The motor is where the horizontal line of the H is, and the FET's are on the outer most points of the vertical lines that make up the H. With the way the transistors are arranged, it enables a motor to be driven in either direction and at many different speeds, including braking.
FET's are good switches which can be digitally controlled to turn on and off and provide power to things such as motors.
The FET's on my H-bridge only have either one N or one P inside them, which is why I have 4 FET packages on my board instead of only 2 FET packages(like xmods).
p221.ezboard.com /fxmodrcfrm8.showMessage?topicID=1067.topic   (924 words)

  
 The Education White Paper 4 -A Programme for the Transformation of Further Education and Training   (Site not responding. Last check: 2007-10-07)
FET will include learning programmes that will be registered on the National Qualifications Framework from levels 2 to 4 and that will correspond with the present (grades 10 to 12 in the school system and N1 to N3 in the technical college system.
FET is where child abuse, sexual harassment and violence must be addressed through the use of a range of strategies, including curriculum provision and development, career guidance and the development of sports provision, which can recognise the specific needs of girls and young women.
FET institutions will be responsible for ensuring that they meet the targets agreed to in the funding memorandum and will be required to manage their financial affairs and account for their use of public funds.
www.ilo.org /public/english/employment/skills/recomm/publ/040.htm   (12931 words)

  
 IVF Connections - Questions/Answers
Frozen Embryo transfer (FET) is when leftover frozen embryos from a previous IVF cycle are transferred to you during a natural or medicated cycle.
While FET success rates are usually not quite as high as IVF success rates, many women have become pregnant during their FET cycles.
During a medicated FET you are given medications (Sometimes Lupron, usually some form of Estrogen and then after transfer some form of Progesterone) to create an artificial cycle in which the clinic has more control over when to transfer the embryos.
www.ivfconnections.com /qfet.htm   (792 words)

  
 Victor Fet
Fet, V. The fauna of spiders (Aranei) of the southwestern Kopetdagh.
Fet, V. Ecology of the scorpions (Arachnida, Scorpiones) of the Southeastern Kara-Kum.
Fet, V. On ecology of gall aphids (Homoptera, Aphidoidea) and a complex of invertebrates bound with them on pistachio (Pistacia vera L.).
www.science.marshall.edu /fet/euscorpius/Fet.htm   (3320 words)

  
 AVA - Fet Valve Amps   (Site not responding. Last check: 2007-10-07)
Now the Fet Valve amplifiers have that new output stage and the necessary driver stage adjustments, and the sonic results are pretty amazing.
The Fet Valve 350EXR and 550EXR amplifiers take the annoyance out of poorly recorded material and give you the artist, the music, the performance, and the emotions of the music without seeming to take away or mask anything at all.
The Fet Valve amplifiers are also clear, pure, transparent, with even wider musical range and dynamics than the OmegaStar series, with the addition of the ability to capture the spirit and emotions of the music like nothing else, and weed out the nasties at the same time.
www.avahifi.com /root/equipment/amplifier/fetvalve_amps.htm   (752 words)

  
 Fet, Afanasy Afanasyevich --  Encyclopædia Britannica
Fet also spelled Foeth, legitimatized name Afanasy Afanasyevich Shenshin Russian poet and translator, whose sincere and passionate lyric poetry strongly influenced later Russian poets, particularly the Symbolist Aleksandr Blok.
The type described previously is a depletion mode FET, since a region is depleted of its natural charge.
The field effect can also be used to create what is called an enhancement mode FET by enhancing a region to appear similar to its surrounding regions.
www.britannica.com /eb/article-9034135?tocId=9034135   (315 words)

  
 Build this simple "electronic electroscope," a FET electrometer   (Site not responding. Last check: 2007-10-07)
This FET sensor is not an ideal educational device because it responds differently to positive than to negative.
The FET does not actually respond instantly, there is a speed-of-light delay (about one nanosecond per foot of distance.) It takes a short while for the wave of vanishing e-field to reach the sensor.
The FET circuit is so sensitive that it will detect the energy stored on a tiny homemade capacitor.
www.eskimo.com /~billb/emotor/chargdet.html   (4057 words)

  
 FET Preamp Cable
The FET and a few associated parts can be built into a standard 1/4-inch phone plug on the near end of the cable while the remainder of the circuitry and the battery can be housed in a small MXR-sized box on the far end of the cable.
Due to FET manufacturing consistancy issues and power supply limitations, the FET needs to be hand selected for the best performance from this circuit.
The FET source and drain are inexplicably swapped throughout the text.
www.till.com /articles/PreampCable   (2439 words)

  
 FET Current Ratings -- Chuck's Robotics Notebook
If the FET is dissipating 100 watts then the junction temperature will be 100 * 0.45 or 45 °C greater than the temperature measured at the case (that's the metal tab on the TO-220).
But it also tells us that at 169 amps the FET would be dissipating 333 Watts and we would have to remove all 333 watts from the case instantly to keep it cool (zero thermal resistance) and frankly that's not possible without some interesting cryonics or a really big heat sink.
Assuming the FET is sitting in air that is at room temperature or 25 degrees there is 150 degrees difference between the ambient air and the junction.
www.mcmanis.com /chuck/robotics/projects/esc2/FET-power.html   (1654 words)

  
 ?'s about FET's - Fertilitext Discussion Board   (Site not responding. Last check: 2007-10-07)
I feel as though the FET is so far away, but with the holiday, hopefully it will go fast.
I have a friend who had 2 m/c's, she and her DH had their blood tests and found out that my friend's blood is clotting very fast which caused the babies to stop growing.
We can actually do FET in December, I really can't wait but as you see, December is such a busy month, so we decided to do it in January.
www.fertilitext.org /ubb/Forum11/HTML/007937.html   (4971 words)

  
 FET [rec.humor.funny]   (Site not responding. Last check: 2007-10-07)
Here's an interesting view of the management-worker interface, obviously sent from a denizen of the unbearable white heat of the leading edge of the technicological revolution.
The Field-Effectiveness Transistor (FET) is a four-terminal, depletion- mode device shown schematically in Fig.
As you can see, the device acts basically as a switch; when the influence of MGMT is removed, a conductive path is established between SALES and CUST on the MKTG substrate.
www.netfunny.com /rhf/jokes/90q2/fet.html   (259 words)

  
 Xmod FAQ
It is also adviseable to put a thin coat of thermal grease between the motor housing and the heatsink.
A "FET" is a "Field-Effect Transistor" that is used to drive your electric motor.
FET stacking is common and "doubles" the current capacity of the FET.
biline.ca /xmod_faq.htm   (678 words)

  
 FET on Encyclopedia.com   (Site not responding. Last check: 2007-10-07)
FET Resources Ltd. / Focus Energy Trust announces the increase to the FET Exchangeable Share Exchange Ratio effective February 15, 2005; Focus Energy Trust - FET.UN - TSX FET Resources Ltd. - FTX - TSX.
FET Resources Ltd. / Focus Energy Trust Announces the Increase to the FET Exchangeable Share Exchange Ratio Effective January 15, 2004; Focus Energy Trust - FET.UN -TSX FET Resources Ltd. - FTX -TSX.
FET Resources Ltd. / Focus Energy Trust announces the increase to the FET exchangeable Share Exchange Ratio effective December 15, 2003; Focus Energy Trust - FET.UN -TSX FET Resources Ltd. - FTX -TSX.
www.encyclopedia.com /html/X/X-F1E1T1.asp   (518 words)

  
 FET
To use nanotubes in future circuits it is essential to be able to make transistors from them.
We have successfully fabricated and tested nanotube transistors using individual multi-wall or single-wall nanotubes as the channel of a field-effect transistor (FET).
As we cool the FET down from room temperature to 4 degree Kelvin (minus 460 degree Fahrenheit) we see the device behavior change dramatically.
www.research.ibm.com /nanoscience/fet.html   (174 words)

  
 FET   (Site not responding. Last check: 2007-10-07)
FET students and graduates have high success rates in finding summer and then career employment with:
FET faculty encourages students to continue their education in the fields of Environmental Studies, Fisheries Biology, Conservation Biology, Forest Science, Zoology, Parks, Tourism and Recreation, First Nations Studies and Education.
Introduction to the practice of silviculture in B.C. with emphasis on Silviculture Prescriptions and "basic" silviculture activities utilized to ensure free-growing stands.  Silviculture systems, artificial and natural regeneration, nursery techniques, species selection, site preparation and vegetation management techniques are introduced with field examples.
www.nwcc.bc.ca /programs/printversions/fet_print.htm   (980 words)

  
 Discrete FET Guitar Preamp
This can compensate for some variation in FET characteristics -- if the FET is conducting too much current, the voltage across R2 will rise making the FET gate more negative with respect to the FET source, and thus reducing the current in the FET.
The upshot is that while this preamp circuit is designed to work with typical J201 FETs, it will not work with all of them and it would be a good idea to try a handful of FETs and throw out any that don't bias correctly.
For me a discrete FET circuit is the best way to go and, as a side effect, is only half the space (4 resistors, 1 fet, 1 cap, less wiring, add a cap and a pot if you need the gain adjustment).
www.till.com /articles/GuitarPreamp   (1844 words)

  
 U310 FET preamplifier   (Site not responding. Last check: 2007-10-07)
This FET preamplifier has been around for almost 25 years.
It is extremely reliable and can handle several watts directly into either the input or the output without failure.
These FET preamplifiers are very forgiving to accidental over-drive.
www.ham-radio.com /n6ca/50MHz/50appnotes/U310.html   (364 words)

  
 GaN Power FET achieves 174 W output at 6 GHz., Toshiba Corp. C I Dept.
The result is a GaN power FET with eight times the power density of a GaAs FET and the world's highest output power at the 6GHz frequency level.
The new FET is expected to become a key component in microwave communications.
Working with the new epitaxial layer structure, Toshiba processed and optimized the FET unit structure, including gate length and distance of source and drain electrodes and this produced high performance in the C-band and higher frequencies.
news.thomasnet.com /fullstory/467398/rss   (904 words)

  
 [No title]
An FET (Further Education and Training) Colloquium was held with principals and curriculum officials to establish a foundation for FET developments in schools and districts.
Advocate Gaum stressed the commitment of the province to securing a later date for implementation of the new curriculum in the FET band than the originally announced 2004 and also assured those present that the later announcement of staff changes which had been made in 2002 would not happen again.
In addition the WCED had strongly recommended, during the period of public comment, that attention be paid to planning weaknesses and made points related to assessment, budget and training.
curriculum.wcape.school.za /index/n/v/159   (883 words)

  
 fet   (Site not responding. Last check: 2007-10-07)
The field effect transistor (FET) is made of a bar of N type material called the SUBSTRATE with a P type junction (the gate) diffused into it..
The fet is voltage controlled, unlike the transistor which is current controlled.
This device is sometimes called the junction fet or jugfet or jfet.
ourworld.compuserve.com /homepages/g_knott/elect240.htm   (170 words)

  
 TOSHIBA'S NEW PARTIALLY MATCHED L/S-BAND GaAs FET   (Site not responding. Last check: 2007-10-07)
The company's new L/S-band GaAs FET, designated TPM1919-40, is offered at 40 watts (W), and is the first L/S band GaAs FET to achieve such a high output of power.
We are one of the leaders in supplying higher power matched GaAs FET within each frequency range.
Toshiba's new 1.9GHz 40W L/S-band GaAs FET is targeted towards the hand held cellular phone market, specifically the base stations used in cellular phone transmission.
www.toshiba.com /taec/press/to-401.shtml   (444 words)

  
 Tolstoy Reminiscences of Tolstoy - Fet   (Site not responding. Last check: 2007-10-07)
It was only during the last years of Fet's life, when my father was entirely absorbed in his new ideas, which were so at variance with Afanasyi Afanasyevitch's whole philosophy of life, that they became estranged and met more rarely.
Before the railway was made, when people still had to drive, Fet, on his way into Moscow, always used to turn in at Yasnaya Polyana to see my father, and these visits became an established custom.
Afterward, when the railway was made and my father was already married, Afanasyi Afanasyevitch still never passed our house without coming in, and if he did, my father used to write him a letter of earnest reproaches, and he used to apologize as if he had been guilty of some fault.
www.worldwideschool.org /library/books/hst/biography/ReminiscencesofTolstoy/chap11.html   (1301 words)

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