RSS SubjectsBlogs about "Transistor"


DIY Geiger Counter
2012-04-03 22:06:00
Here is a simple Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required. The complete setup has been assembled in only 5 minutes, so this is a very simple …Read more »
NPN Transistor Part ID
2009-09-10 05:15:00
Hi guys with old catalogs, I need help to ID a (probably) a NPN transistor in TO-66 with markings: G0857 RCA H 8047 and indentations on one wing: H F Its from a motor drive in old grinder Could someone enlighten me if we can post pics here?, sorry I
June 26, 1948 - Patenting the Grown-Junction Transistor
2009-06-26 21:51:00
On this day in engineering history, William Shockley filed a patent for the grown-junction transistor, the first bipolar junction transistor (BJT). The British-born researcher would later win a share of The Nobel Prize in Physics for his research on semiconductors and the discovery of the tran
Can Transistor Chameleon Unseat OLEDs?
2009-05-14 14:33:00
A recent article and video demonstrate how scientists have developed a transistor which allows for the color shifting of practically any surface. Will this technology present itself as a formidable opponent to existing technologies such as organic light-emitting diodes (OLEDs) and electronic paper (
2009-04-28 10:40:00
hi all please gents, any body can advice me how to test transistor with multi meter, and how i know if it is common base or emmiter? many thanks
The Lost Transistor?
2009-04-02 17:58:00
From MAKE Magazine: While conducting historical research for the recent MAKE presents: The Transistor video, I came across references to an earlier iteration of the device apparently created way back in 1933 - a full 14 years before Bell Labs researchers had a working model. What
problem transistor selecting
2009-03-29 19:14:00
In designing of circuits how do we select transistors
'Kingdom for a transistor info'!!!
2009-03-07 05:56:00
working on an ancient DC drive (Held&Rossi SM 801DC) with half of the power transistors blown. Cannot find any info on it ENYWHERE. Markings on it: 18458h GE/RCA TO3 case, NPN I'm DESPARATE!!
2009-02-17 06:56:00
hello wat do u mean by constant current transistor a constant current source...?
Designing a Transistor Output Card
2009-01-20 15:41:00
I want a design of a card that take a signal from PLC 24V relay output card for control using Transistors
Transistor Measurements
2009-01-09 05:08:00
Hello,i wanna to ask is how to check I and V using transistor?
Transistor Communication
2008-11-17 17:28:00
How to transistors calculate and communicate?
transistor datasheet
2008-08-19 14:19:00
I want the datasheets catalog for both Tiny transistors which begin with B6F,CFF.
Transistor Datasheets
2008-08-19 14:19:00
I want the datasheets catalog for both Tiny transistors which begin with B6F,CFF.
Transistor Question
2008-08-06 18:08:00
Hey Guys, I have another transistor question. I have a schematic requiring a BC108C. My supplier lists their transistors using a 2Nxxx... code. Does anyone know where I could find a cross reference for this particular transistor? Thank you all!
transistor biasing
2008-07-08 14:04:00
i would like to know about transistor biasing..and types of biasing.. can you please give a clear idea about the above mentioned topic and clear my doubts in my subject
2008-06-04 20:58:00
Why does transistor amplify signal, I'm asking basic principle behind it?
2008-05-30 20:24:00
How does the transistor amplify the signal?
RIP: Morgan Sparks, transistor inventor; former Bell Labs researcher and Sa
2008-05-07 17:16:00
From Boing Boing: We are sad to report the death of former Sandia Labs Director Morgan Sparks. He's best known as the Bell Labs researcher who invented the first practical transistor. His work made possible so many other inventions. Without transistors, one cannot begin to imagine
Tech Update: World?s Smallest Atom Sized Transistor Developed
2008-04-20 21:13:00
UK scientists have innovated world’s smallest transistor which is comparable to the size of an atom and can well be considered as the building block of the electronic devices in future. The newly developed technological wonder is just one atom thin and 10 atoms wide and is made from super material Graphene a better ...
El transistor ms pequeo
2008-04-20 02:14:00
Investigadores de la Universidad de Manchester han creado el transistor ms pequeo del mundo: 1 tomo por 10 tomos. Impresionante. Comparte esta anotacin ... Link: ALT1040 Tags: Investigadores, Universidad, Manchester, creado, transistor, pequeo, mundo:, tomo, tomos., Impresionante. Comparte, esta, anotacin
Fabrican el transistor ms pequeo del mundo
2008-04-19 00:26:00
Fabrican el transistor ms pequeo del mundo (18/Abr/2008) Dimensiones: un tomo de profundidad, 10 tomos de ancho, es 3 veces ms pequeo que los transistores de 32 nm
2008-03-30 13:37:00
can a transistor be replaced with something better and faster in operation.
Disney DTD1363-car, Need part # of transistor
2008-03-12 02:47:00
Need the part # and where to order a horizontal output transistor for a disney dtd1363-car. Number stamped on transistor is p5nk 50zfp gk180 chn 607
FM Transmitter With Transistor 2SC1815
2008-03-06 16:23:00
Will have to introduce a system of simple and small FM transmitter. Not only does it meet the requirements of the launch distance, but also at the same time using microphone and voice input signal line, background voice. Modulation circuit surveillance has also joined the table first, so that they can better control and the proper use of transmitters, the following circuit diagram, read briefly, whether it's just like a radio station equipment as many functions. Yes, this small transmitter can help you easily set up an amateur FM radio stations! 500 M in the coverage around. Echocardiography the bar, act immediately!Principle small FM transmitter circuit components and options:Signal to the microphone after intake, the C1 coupling into the BG1 and external circuit voltage of the single negative feedback amplifier, the voltage signal amplification weak enough to enlarge the extent of U1A and the line to enter the input signal with a mixed U1B. Mixed signal modulation way to the R17 ...
Pegados al transistor
2008-03-02 15:25:00
El triunfo ante el líder garantiza seguir en la tercera plaza, pero puede significar ampliar diferencia con perseguidores, así que mucha gente estará pendiente de si quienes vienen por detrás nos dan un poco más de "oxígeno".Los partidos a falta de unos 5 min van así:Celta 2 - Elche 2. El Celta que ganaba por 2-0, tira el partido en 2 minutos que sirvieron al Elche para hacer dos goles, aunque el empate es un resultado que no le viene bien a ninguno.Real Sociedad 4 -Xerez 2. La Real que se adelantó mediante dos penaltys, a punto estuvo de complicarse la vida encajando dos goles casi seguidos, pero en los últimos 5 minutos apareció Díaz de Cerio primero y Garitano después para sellar una victoria que todos esperabamos.Malaga 1 - Poli Ejido 1. El Málaga saca un empate de un partido que perdía, pero afloja peligrosamente porque ya tiene al Sporting y a la Real Sociedad picando a su puerta.Cádiz 1 - Castellón 1 El Castellón empata y se descuelga a seis puntos de los pue...
transistor tester
2008-03-01 15:24:00
i was just wondering, does a transistor meter work like a normal meter? if not, how? can we build our own transistor meter which is user friendly?
horizontal output transistor
2008-02-12 04:28:00
My television has two circuit boards a main board located on the floor of the set and a secondary board located on the crt tube on which board will I find the horizontal output transistor... I have another television can I simply swap them if they...
Intel Tukwila 2 billion transistor chip is worlds first: 2GHz Itanium proce
2008-02-04 13:48:00
This is some chip, not sure if you know anything about the Intel quad-core Tukwila chip but we have some great news anyway. The Intel Tukwila 2 billion transistor chip which is a worlds first is being launched at the International Solid State Circuits Conference. The chip is expected to arrive in the second half of 2008, so what is this chip then? Well it is a 2GHz Itanium processor packs in more than 2 billion transistors, the only downside is that this chip will be going straight to the top and consumers will not see it in their computers anytime at all. The good news is that all you IT people is that the processor doubles the performance of Intel’s enterprise-class, 9100-series Montvale processors with just a 25% increase in power consumption. Source Bookmark to: Written by Mark for Product ReviewsIn Sections: Computer Hardware, ComputersRelated PostsNew AMD Barcelona processor chip taking the fight to rival IntelIntel’s QX6850 Processor, The Best Pro...
Two Transistor Wien Bridge Oscillator
2008-01-27 06:15:00
Here is a two-transistor Wien bridge oscillator using an ordinary night-light bulb for stabilization. The output is about 6 volts p-p and can drive fixed loads as low as 2 or 3 thousand ohms without additional buffering. A 10 k amplitude potentiometer with the wiper going to a high input impedance ...
4-Transistor Amplifier for Small Speaker Applications
2008-01-20 18:21:00
The circuit below shows a 4-transistor utility amplifier suitable for a variety of projects including receivers, intercoms, microphones, telephone pick-up coils, and general audio monitoring. The amplifier has a power isolation circuit and bandwidth limiting to reduce oscillations and “motorboating”. The values are not particularly critical and modest deviations from the ...
TTL(transistor transistor logic) to NIM (nuclear instrumentation module) ci
2008-01-18 19:18:00
hi friends, I'm doing university project concerning the converting the Transistor transistor logic(TTL) signal to Nuclear Instrumentation Module(NIM) signal. Here is my question, 1) i got the output square wave at the logic 0 recorded 600mv and logic 1 is -20mv. the result i wish to get is lo
The Ladybug Transistor - Can't Wait Another Day (2007)
2008-01-12 11:05:00
The Ladybug TransistorCan't Wait Another DayRelease Date: June 5, 2007Label: Merge RecordsTracklist1. Always On The Telephone2. I'm Not Mad Enough3. Here Comes The Rain4. Terry5. This Old Chase6. For No Other7. Three Days From Now8. In-Between9. So Blind10. Broken Links11. California Stopover12. Lord, Don't Pass Me ByLinksrapidshare | megasharesPitchforkWhen it comes to staking out a new direction, these are solid results: You can't help but wish them lots of luck in pinning down their new sound, lineup, and working method, especially after the recent death of San Fadyl, one of the more lovable drummers in indie rock. As an album, though, this one feels like a bit of a stall-- a little filler, a little room to breathe, and a little time to make plans. The band's years making friends and fans all through the indie and indie pop worlds mean they've earned enough credit for people to bear with them, and even enjoy their work in progress-- but here's hoping they'll plow their ne...
By: all music
The Ladybug Transistor - The Albemarle Sound (1999)
2008-01-12 11:04:00
The Ladybug TransistorThe Albemarle SoundRelease date: March 23, 1999Label: Merge RecordsTracklist 1. Oriental Boulevard 2. Six Times 3. Meadowport Arch 4. Today Knows 5. The Great British Spring 6. Like A Summer Rain 7. The Swimmer 8. Cienfuegos 9. The Automobile Song10. Oceans In The Hall11. Vale Of Cashmere12. Aleida's ThemeLinksrapidshare | megashares
By: all music
Transistor de diamante que alcanza los 120 GHz en desarrollo
2008-01-10 07:10:00
Una empresa britnica llamada Element Six Limited y la japonesa Nippon Telegraph & Telephone (NT&T) se han unido para crear un transistor que pueda funcionar a 120 GHz. Tecnicamente se ha dicho que se utilizan deposiciones de vapor qumico para hacer un bao de diamante que recubra un substrato de diamante policristalino. El transistor slo ha sido ...
Meter check of a transistor
2008-01-10 06:29:00
Testing a JFET with a multimeter might seem to be a relatively easy task, seeing as how it has only one PN junction to test: either measured between gate and source, or between gate and drain. Testing continuity through the drain-source channel is another matter, though. Remember from the last section how a stored charge across the capacitance of the gate-channel PN junction could hold the JFET in a pinched-off state without any external voltage being applied across it? This can occur even when you're holding the JFET in your hand to test it! Consequently, any meter reading of continuity through that channel will be unpredictable, since you don't necessarily know if a charge is being stored by the gate-channel junction. Of course, if you know beforehand which terminals on the device are the gate, source, and drain, you may connect a jumper wire between gate and source to eliminate any stored charge and then proceed to test source-drain continuity with no problem. ...
Meter check of a transistor
2008-01-10 06:23:00
Bipolar transistors are constructed of a three-layer semiconductor "sandwich," either PNP or NPN. As such, they register as two diodes connected back-to-back when tested with a multimeter's "resistance" or "diode check" functions: Here I'm assuming the use of a multimeter with only a single continuity range (resistance) function to check the PN junctions. Some multimeters are equipped with two separate continuity check functions: resistance and "diode check," each with its own purpose. If your meter has a designated "diode check" function, use that rather than the "resistance" range, and the meter will display the actual forward voltage of the PN junction and not just whether or not it conducts current. Meter readings will be exactly opposite, of course, for an NPN transistor, with both PN junctions facing the other way. If a multimeter with a "diode check" function is used in this test, it will be found that the emitter-base junction possesses a slightly greater f...
The transistor as a switch
2008-01-10 06:22:00
Because a transistor's collector current is proportionally limited by its base current, it can be used as a sort of current-controlled switch. A relatively small flow of electrons sent through the base of the transistor has the ability to exert control over a much larger flow of electrons through the collector. Suppose we had a lamp that we wanted to turn on and off by means of a switch. Such a circuit would be extremely simple: For the sake of illustration, let's insert a transistor in place of the switch to show how it can control the flow of electrons through the lamp. Remember that the controlled current through a transistor must go between collector and emitter. Since it's the current through the lamp that we want to control, we must position the collector and emitter of our transistor where the two contacts of the switch are now. We must also make sure that the lamp's current will move against the direction of the emitter arrow symbol to ensure that the transist...
3D Transistor Boosts Clock Speed
2008-01-07 13:55:00
Based on a 3D semiconductor non-volatile memory (NVM) cell design, a tri-control stacked gate transistor (TCG-SGT) is promising to boost processor clock speeds from 20GHz to a possible 50GHz. Its 3D structure consists of a source, gate, and drain arranged vertically, instead of spread out horizontal
Sixty years ago today: transistors -- and modern electronics -- were born
2007-12-18 12:11:00
Like transistors? You must -- you're using a few million (or billion) right now just reading this sentence. But it's actually difficult to overstate the transistor's importance since its invention exactly 60 years ago today by super nerd gods John Bardeen, Walter Brattain, and William Shockley -- everything changed when solid state circuits were finally able to replace mechanical relays and vacuum tubes. There's little doubt electronics and technology as we know it today are only possible because of this fundamental discovery, although 60 years on we can only seem to navel gaze about what sorts of real jobs we'd all have if we weren't just spending our days obsessing about the gadgets these transistors power.
El transistor cumple 60 aos
2007-12-17 13:21:00
El 16 de diciembre de 1947, los investigadores de los entonces prominentes Laboratorios Bell John Bardeen y Walter Houser Brattain, conjuntamente con el fsico William Bradford Shockley, crearon el primer transistor que obtuvo ganancia. Sesenta aos despus, no cabe duda que nos encontramos ante uno de los avances ms importantes del siglo XX, ya que sobre l se ha cimentado toda la evolucin que se ha producido en las ltimas dcadas en torno a la electrnica. El transistor que fabricaron era de punta de contacto, y constaba de una base de germanio, que poda ser de tipo N y del tipo P, sobre la que se apoyaban dos puntas metlicas que constituan el emisor y el colector. La corriente de emisor era capaz de modular la resistencia que se "vea" en el colector. La fotografa que os muestro a continuacin es de una rplica que se conserva del transistor que desarrollaron en 1947:Su fabricacin no era precisamente sencilla, ya que las puntas se tenan que ajustar a mano y el conjunto ...
Χρόνια πολλά Transistor!
2007-12-16 21:25:00
Χρόνια πολλά Transistor!Πριν από 60 χρόνια, στις 16 Δεκεμβρίου του 1947, οι φυσικοί William Shockley, John Bardeen και William Brattain των εργαστηρίων της Bell στο Murray Hill, N.J. κατασκεύασαν το πρώτο transistor.Πειραματίζ-ονταν πάνω σε ημιαγωγούς, ψάχνοντας έναν ημιαγωγικό ενισχυτή για να μπορέσουν να αντικαταστήσουν- τις λυχνίες που χρησιμοποιούντα- σε πολλές από τις ηλεκτρικές συσκευές. Ύστερα από πολλές προσπάθειες τα κατάφεραν!Ήταν τόσο σίγουροι για την εφεύρεσή τους που για 6 μήνες δεν είχαν αναφέρει τίποτα και το κατοχύρωσαν αμέσως σαν ευρεσιτεχνία.Αργ-ότερα, στις 30 Ιουνίου 1...
What Kind of Transistor?
2007-12-13 16:30:00
Hey guys, I have been trying to identify this transistor that I found in a schematic. I have searched the web, but haven't found anything. Is this just a regular NPN transistor?
The transistor is 60 years old
2007-12-11 00:00:00
During the weekend I received an e-mail from Intel with some interesting tidbits about the Transistor(pictured, Wikipedia, GNU FDL), the building blocks of all sorts of electronic gadgetry.Transistors are semiconductor devices, used as an amplifier or an electrically controlled switch, invented 60 years ago and some say it is the ...
Nuevo Transistor 3D trabajar a 50GHz
2007-12-09 16:17:00
Unisantis, una compaa de investigacin japonesa dice que va a crear un nuevo tipo de transistor 3D que trabajar entre 20GHz y 50GHz. El Surrounding Gate Transistor (SGT).Utilizando una estrutctura de transistor vertical, a diferencia de los usados actualmente que estn construidos horizontalmente en un plano, se llegar a una frecuencia de trabajo de ms de 10 veces el mximo posible en un CPU de AMD o Intel.El proyecto alcanza ms credibilidad cuando vemos que el encargado del mismo es Fujio Masuoka, el inventor de la memoria Flash.La estructura 3D del transistor implica que los electrones tienen menos distancia que viajar lo que se traducira en ventajas de costo de produccin as como calor emitido.El SGT permite refinaciones del modelo en el futuro por lo que extiende la ley de Moore por otros 30 aos hasta alcanzar lmites fsicos.Va: ArsTecnica | The Register
El transistor cumple 60 aos de dar vida a todas las formas de tecnologa
2007-12-06 18:38:00
El transistor es un dispositivo electrnico semiconductor que cumple funciones de amplificador, oscilador, conmutador o rectificador. El transistor bipolar fue inventado en los Laboratorios Bell de EEUU en diciembre de 1947 por John Bardeen, Walter Houser Brattain y William Bradford Shockley, quienes fueron galardonados con el Premio Nobel de Fsica en 1956. En la foto el primer ...
Organic transistor improves with age
2007-12-03 16:46:00
From New Scientist - Latest Headlines: Ageing may be as important to electronics as it is to good wine. A plastic transistor doubles its performance if simply left to sit at room temperature for a week. Cheap to mould, pentacene transistors are a promising candidate for orga
?Transistor? proper circuit to pass voltage
2007-11-28 04:51:00
Forgive me if this has been previously asked, but I have been searching for what I remembered to be a fairly simple circuit that we did in school many moons ago. I need to build a circuit that will close with a 5V input; however the 5V is only a trigger that will allow 12 to 24 V to pass thro
Which transistor is used in each cell of EPROM?
2007-08-30 19:42:00
Floating .gate Avalanche Injection MOS (FAMOS) transistor is used in each cell of EPROM. Share This
power supply regulator mini 9V 0.75A by Transistor
2007-07-11 19:13:00
power supply regulator mini 9V 0.75A by Transistor BD242 and BC549C. P1 control Volt output.P2 control current output. basic electronics, Power supply circuit, regulatorShare This
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