* Class-A designs are simpler than other classes ; for example class-AB and-B designs require two devices ( push – pull output ) to handle both halves of the waveform ; class A can use a single device single-ended.

* The point at which the device comes closest to being cut off is not close to zero signal, so the problem of crossover distortion associated with class-AB and-B designs is avoided.

Compared to an equivalent class-AB device, a class-D amplifier's lower losses permit the use of a smaller heat sink for the MOSFETs while also reducing the amount of input power required, allowing for a lower-capacity power supply design.

Class AB sacrifices some efficiency over class B in favor of linearity, thus is less efficient ( below 78. 5 % for full-amplitude sinewaves in transistor amplifiers, typically ; much less is common in class-AB vacuum-tube amplifiers ).

The forward bias causes the circuit to operate in class-AB mode, so both transistors are slightly on during crossover.

Therefore, class-D amplifiers are typically smaller than an equivalent class-AB amplifier.

Class-D amplifiers for driving subwoofers are relatively inexpensive in comparison to class-AB amplifiers.

* ECE 327: Procedures for Output Filtering Lab – Section 4 (" Power Amplifier ") discusses Darlington pairs in the design of a BJT-based class-AB current driver in detail.

This configuration is commonly used in the output stages of class-B and class-AB amplifier — the base circuit is modified to operate the transistor in class-B or AB mode.

Most modern power amplifiers ( including those used in hi-fi ) employ both techniques, using both class-AB in their output stages, and feedback, offering reasonable efficiency and good distortion figures.

It was organizationally the responsibility of the Department of Public Works and was financed on a rotary fund basis with each agency of government contributing to the pool's operation.

Additional class 2, assignments for daytime operation can be made without causing destructive interference to the class 1, stations or to each other, and by their operation provide additional service on these channels and additional local outlets for a large number of communities.

The only requirements on dictionary information made by the text-lookup operation are that each form represented by the dictionary be available for lookup in the text-form list and that information for each form be available in a sequence identical with the sequence of the forms.

:( 1 ) Place the tools and the men in the sequence of the operation so that each component part shall travel the least possible distance while in the process of finishing.

For each element a of a group G, conjugation by a is the operation φ < sub > a </ sub >: G → G given by ( or a < sup >− 1 </ sup > ga ; usage varies ).

## < tt > MixColumns </ tt >— a mixing operation which operates on the columns of the state, combining the four bytes in each column.

During this operation, each column is multiplied by the known matrix that for the 128 bit key is

In the < tt > AddRoundKey </ tt > step, each byte of the state is combined with a byte of the round subkey using the Exclusive or | XOR operation (⊕).

Assembly language uses a mnemonic to represent each low-level machine operation or opcode.

The actual mathematical operation for each instruction is performed by a subunit of the CPU known as the arithmetic logic unit or ALU.

Whereas a scalar CPU must complete the entire process of fetching, decoding, and executing each instruction and value in a set of data, a vector CPU can perform a single operation on a comparatively large set of data with one instruction.

Most basic calculators assign only one digit or operation on each button.

The company organization of each camp had a dual-authority supervisory staff: firstly, Department of War personnel or Reserve officers ( until 1 July 1939 ), a " company commander " and junior officer, who were responsible for overall camp operation, logistics, education and training ; and secondly, ten to fourteen technical service civilians, including a camp " superintendent " and " foreman ," employed by either the Departments of Interior or Agriculture, responsible for the particular field work.

The factory at Somerset West was in operation in 1903 and by 1907 it was already producing 340, 000 cases kilograms ( 50 pounds ) each annually.

However, with only authoritative name servers operating, every DNS query must start with recursive queries at the root zone of the Domain Name System and each user system must implement resolver software capable of recursive operation.

To achieve this a backup operation is done occasionally or continuously, where each desired database state ( i. e., the values of its data and their embedding in database's data structures ) is kept within dedicated backup files ( many techniques exist to do this effectively ).

Therefore, at maximum operation, each potential traffic channel can have two simultaneous data channels available for messages.

Although EDF claimed that a security firm had only been employed to monitor Greenpeace, the court disagreed, jailing the head and deputy head of EDF's nuclear security operation for three years each.

The operation involves five teenage boys, who have each been chosen and trained by each of the five scientists, then sent to Earth independently in extremely advanced mobile suits ( one designed by each of the scientists ) known as " Gundams " ( called such because they are constructed from a rare and astonishingly durable material known as Gundanium alloy, which can only be created in outer space ).

In other words, an automorphism of E / F is an isomorphism α from E to E such that α ( x ) = x for each x in F. The set of all automorphisms of E / F forms a group with the operation of function composition.

N > 2 saves storage, when comparing with N = 2, at the cost of more processing during both regular operation ( with often reduced performance ) and defective device replacement.

N > 2 saves storage, when comparing with N = 2, at the cost of more processing during both regular operation ( with often reduced performance ) and defective device replacement.

During steady-state operation of a device ( see turbine, pump, and engine ), the average dU / dt may be set equal to zero.

This involves the choice and deployment of microphones, operation of a sound recording device, and sometimes the mixing of audio signals in real time.

Aside from written numerals, the first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic operation, then manipulate the device to obtain the result.

This battery is recharged during operation using an electricity-generating device such as an alternator or generator driven by the engine.

In general, communications equipment operating in these bands must tolerate any interference generated by ISM equipment, and users have no regulatory protection from ISM device operation.

However in the case of the free electron laser, atomic energy levels are not involved ; it appears that the operation of this rather exotic device can be explained without reference to quantum mechanics.

A logic gate is an idealized or physical device implementing a Boolean function, that is, it performs a logical operation on one or more logic inputs and produces a single logic output.

A device that performs modulation is known as a modulator and a device that performs the inverse operation of modulation is known as a demodulator ( sometimes detector or demod ).

At the Jülich Institute of Neurosciences and Biophysics, the world's largest PET / MRI device began operation in April 2009: a 9. 4-tesla magnetic resonance tomograph ( MRT ) combined with a positron emission tomograph ( PET ).

The channel allowed a device to suspend a channel program, pending the completion of an I / O operation and thus to free the channel for use by another device.

In electronic security systems, a physical device or change / presence of any electronic signal / logic which causes trigger to electronic circuit to perform application specific operation.

These instructions typically start an input operation from some peripheral device ( which may be switch-selectable by the operator ).

Other systems may send hardware commands directly to peripheral devices or I / O controllers that cause an extremely simple input operation ( such as " read sector zero of the system device into memory starting at location 1000 ") to be carried out, effectively loading a small number of boot loader instructions into memory ; a completion signal from the I / O device may then be used to start execution of the instructions by the CPU.

In contrast to a protective earth connection, a functional earth connection may carry a current during the normal operation of a device.

The operation of the device depends on the Faraday effect ( which in turn is produced by magneto-optic effect ), which is used in the main component, the Faraday rotator.

This electric field helps in speeding up of the transport of charge carriers from P to N region, which results in faster operation of the diode, making it a suitable device for high frequency operations.

The main disadvantage of basing a carburetor's operation on Bernoulli's principle is that, being a fluid dynamic device, the pressure reduction in a venturi tends to be proportional to the square of the intake air speed.

In addition, the choke can be connected to a cam ( the fast idle cam ) or other such device which prevents the throttle plate from closing fully while the choke is in operation.

These interfaces require between 1 and 4 control signals for operation, resulting in a memory device in an 8 pin ( or less ) package.