BJTs can be used as amplifiers, switches, or in oscillators.

BJTs can be thought of as voltage-controlled current sources, but are more simply characterized as current-controlled current sources, or current amplifiers, due to the low impedance at the base.

PRAM cell selectors can use various devices: diodes, BJTs and MOSFETs.

Devices such as MOSFETS and BJTs can switch at tens of kilohertz up to a few megahertz in power applications, but with decreasing power levels.

The BJTs can be represented in the small-signal circuit by the hybrid-pi model.

In 1960s the switching speed of BJTs allowed for DC / DC converters to be possible in high frequency, with the MOSFET introduced in 1960.

Special measures must be taken to control this characteristic vulnerability of BJTs.

Rather than using a device physics-based model, SPICE simulates IGBTs using Macromodels, a method that combines an ensemble of components such as FETs and BJTs in a Darlington configuration.

Resistor – transistor logic ( RTL ) is a class of digital circuits built using resistors as the input network and bipolar junction transistors ( BJTs ) as switching devices.

In modern circuits, the cascode is often constructed from two transistors ( BJTs or FETs ), with one operating as a common emitter or common source and the other as a common base or common gate.

The concept of the FET predates the BJT, though it was not physically implemented until after BJTs due to the limitations of semiconductor materials and the relative ease of manufacturing BJTs compared to FETs at the time.

All FETs have source, drain, and gate terminals that correspond roughly to the emitter, collector, and base of BJTs.

** Darlington transistors are two BJTs connected together to provide a high current gain equal to the product of the current gains of the two transistors.

By design, most of the BJT collector current is due to the flow of charges injected from a high-concentration emitter into the base where there are minority carriers that diffuse toward the collector, and so BJTs are classified as minority-carrier devices.

Early transistors were made from germanium but most modern BJTs are made from silicon.

Most modern audio amplifiers are based on solid state devices ( transistors such as BJTs, FETs and MOSFETs ), but there are still some who prefer tube-based amplifiers, and the valve sound.

Epitaxy is used in silicon-based manufacturing processes for BJTs and modern CMOS, but it is particularly important for compound semiconductors such as gallium arsenide.

`` That is, if we can be sure this is Colcord's money '' --

It'll probably be at least an hour or two before I can check back with you.

Even as I said it I realized that an education can be invaluable.

Within their confines, moreover, technological and industrial growth has proceeded at an accelerated pace, thus increasing the cornucopia from which material wants can be satisfied.

And no messages can be transmitted on these circuits until senders and receivers authenticate in advance, by special codes, that the messages actually come from their purported sources.

Additional codes can be used to challenge and counterchallenge the authentications.

Nobody can be absolutely certain of the answers.

All can be connected with the gold circuit from their homes.

The box is internally wired so the door can never be opened without setting off a screeching klaxon ( `` It's real obnoxious '' ).

Unless all gadgets are properly operated -- and the wires and seals from the handles removed first -- no damage can be done.

I do not know if such a way of life can come to be a self-conscious challenge, but I suspect that it can.

As his disciples boast, even though his emphasis is elsewhere, Faulkner does show his awareness of the changing order of the South quite keenly, as can be proven by a quick recalling of his Sartoris and Snopes families.

An order can be chanced rather than chosen, and this approach produces an experience that is `` free and discovered rather than bound and remembered ''.

And any sequence can not only change its positions in the work but can even be eliminated from it altogether.

When it comes to this, I shall prefer emigrating to some country where they make no pretence of loving liberty -- to Russia, for instance, where despotism can be taken pure, without the base alloy of hypocrisy '' ( His emphasis )

Something of this can be learned from `` The Way To The Churchyard '' ( 1901 ), an anecdote about an old failure whose fit of anger at a passing cyclist causes him to die of a stroke or seizure.

Similarly experience itself can be conventionalized so that people react to certain preconceived clues for behavior without awareness of the vitality of their experiential field.

When words can be used in a more fresh and primitive way so that they strike with the force of sights and sounds, when tones of sound and colors of paint and the carven shape all strike the sensibilities with an undeniable force of data in and of themselves, compelling the observer into an attitude of attention, all this imitates the way experience itself in its deepest character strikes upon the door of consciousness and clamors for entrance.

it can be changed ; ;

You've already sent your daughter to Miss X's select academy for girls and your son to Mr. Y's select academy for boys, and you can be as liberal as you please with strict impunity.

In scope and power it can only be compared to Tolstoy's War And Peace.

However, for convenience we will stick to the idea that information can be classified according to Table 1.

Since the hazards of poor communication are so great, p can be justified as a habitable site only on the basis of unusual productivity such as is made available by a waterfall for milling purposes, a mine, or a sugar maple camp.

A contrast of the scripture reading of, let us say, St. Augustine, John Bunyan, and Thomas Jefferson, all three of whom found in such study a real source of enlightenment, can tell us a great deal about these three men and the age that each represented and helped bring to conscious expression.

Chewing it over with his colleagues and in his own mind, he reaches a tentative identification of the question -- tentative because it may change as he explores it further and because, if no tolerable answer can be found, it may have to be changed into one which can be answered.

This can usually be found out at the nearest town hall.

Out of long experience I have found that incidental figures and other objects like trees, logs, and bushes can be traced from the original sketch and moved about in the major areas on the final sheet until they occupy the right position, which I call clicking.

Reports Jim Lendrum: `` By studying men on the job, we found that two men -- a carpenter and a helper -- can lay a floor faster than three.

We found that three men -- two carpenters and a helper -- can put up wall panels or trusses more economically than four men -- because four men don't make two teams ; ;

We found that wherever you can use two teams on a job, five men, not four, is the magic number ''.

Nomia melanderi can be found in tremendous numbers in certain parts of the United States west of the Great Plains, for example, in Utah and central Washington.

If the vertex is at Af, and if the interior of C is on the left as one moves in the direction of increasing t, then every such corner can be found from the curve obtained by rotating C clockwise through 90-degrees about the vertex.

A phonemic system can be stated without reference to morphophonemics, but it cannot always be found without morphophonemics.

Interesting evidence can be found in the results of the Chamber of Commerce elections, which took place three weeks before national elections.

Much progress has been made in the last two decades in developing techniques for understanding children, yet in almost any classroom today can be found children whose needs are not being met by the school program.

The detailed mechanisms of this type of failure have been studied extensively by Merchant for metal cutting, and the principles found can be directly applied to coatings.

Merchant has found that the same basic relationships which describe the geometry and force systems in the case of the cutting mechanism can also be applied to the discontinuous chip formation provided the proper values of instantaneous shear angle and instantaneous chip thickness or cross-sectional area are used.

Both are primarily concerned with the uses that can be made of the material that the collector has found.

and everywhere can be found scars of earlier breaks once deeply buried.

Motion-picture exhibitions took place in stores in a general atmosphere like that of the penny arcade which can still be found in such urban areas as Times Square.

A measure of how hot the stock was, can be found in what happened to it on the market as soon as trading began.

Hayes said that if a way can be found to deal effectively with short-term capital movements between nations, `` there is no reason, in my judgment why the international financial system cannot work satisfactorily for at least the foreseeable future ''.

`` We hope '', they said, `` that no family can be found amongst us without a correct version of the Holy Scriptures ''.

In all big cities outside the South, and even in small towns within the South, radio stations can be found beaming some or all of their programs at Negro listeners.

The cakes are marketed and can the found in cities either in Algeria or in Europe or North America.

The prototype for this model can be found in Bolos of Mendes ' second century BCE work, Physika kai Mystika ( On Physical and Mystical Matters ).

Early examples of attempts to capture the phenomenon of motion drawing can be found in paleolithic cave paintings, where animals are depicted with multiple legs in superimposed positions, clearly attempting to convey the perception of motion.