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Analog circuit (or analogue circuit) refers to electronics systems with analog signals with any continuously variable signal. It differs from digital electronics in that small fluctuations in the signal are meaningful in that they are continuously variable rather than digitally quantised. Wikipedia does not have an article with this exact name. ...
Wikipedia does not yet have an article with this exact name. ...
The field of electronics is the study and use of systems that operate by controlling the flow of electrons (or other charge carriers) in devices such as thermionic valves and semiconductors. ...
An analog or analogue signal is any variable signal continuous in both time and amplitude. ...
In information theory, a signal is the sequence of states of a communications channel that encodes a message. ...
In mathematics, a continuous function is a function for which, intuitively, small changes in the input result in small changes in the output. ...
In computer science and mathematics, a variable (sometimes called a pronumeral) is a symbol denoting a quantity or symbolic representation. ...
A digital system is one that uses discrete numbers, especially binary numbers, or non-numeric symbols such as letters or icons, for input, processing, transmission, storage, or display, rather than a continuous spectrum of values (an analog system). ...
Fluctuation Fluctuation refer to an economical term called conjuncture. ...
Quantization of x using Q(x) = floor(Lx)/L. In digital signal processing, quantization is the process of approximating a continuous signal by a set of discrete symbols or integer values; that is, converting an analog signal to a digital one via analog-to-digital conversion. ...
Origin of term The word "analog" implies an analogy between cause and effect, voltage in and voltage out, current in and current out, sound in and sound out. An analog circuit is therefore an electric circuit that operates on analog signals. Analogy is either the cognitive process of transferring information from a particular subject (the analogue or source) to another particular subject (the target), or a linguistic expression corresponding to such a process. ...
An electrical network or electrical circuit is an interconnection of analog electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. ...
An analog or analogue signal is any variable signal continuous in both time and amplitude. ...
Explanation Analog electronics is sometimes confused with other sub-divisions of the general field of Electronics which include Power electronics and Digital electronics. Power electronics is the technology associated with the efficient conversion, control and conditioning of electric power by static means from its available input form into the desired electrical output form. ...
Digital Electronics is based on a number of discrete voltage levels, usually two, as distinct from analog electronics which uses voltages to represent variables directly. ...
Analogs The word "analog" implies an analogy between cause and effect, voltage in and voltage out, current in and current out, sound in and sound out. For example, in an analog sound recording, the variation in pressure of a sound striking a microphone creates a corresponding variation in the current passing through it or voltage across it. An increase in the volume or amplitude of the sound causes the fluctuation of the current or voltage to increase proportionally while keeping the same waveform or shape and electrical analog. Clocks with hands are often called analog displays; those that display digits are usually called digital displays. However, many analog clocks are actually digital since the hands do not move in a smooth continuous motion, but in small steps every second or sub division of a second. Analogy is either the cognitive process of transferring information from a particular subject (the analogue or source) to another particular subject (the target), or a linguistic expression corresponding to such a process. ...
Effect can be used in several different ways: Cause and effect are the relata of causality In movies and other media, sound effects are artificially created or enhanced sounds. ...
International danger high voltage symbol. ...
In electricity, current refers to electric current, which is the flow of electric charge. ...
A schematic representation of hearing. ...
Waveform quite literally means the shape and form of a signal, such as a wave moving across the surface of water, or the vibration of a plucked string. ...
A wall clock A clock (from the Latin cloca, bell) is an instrument for measuring time and for measuring time intervals of less than a day—as opposed to a calendar. ...
In the field of Power Electronics analogs can be the Energy Storing variables such as the current in an Inductor or the Voltage across the terminals of a Capacitor. A capacitor is a device that stores energy in the electric field created between a pair of conductors on which electric charges of equal magnitude, but opposite sign, have been placed. ...
Information and analog signals Any information may be conveyed by an analog signal, often such a signal is a measured response to changes in physical phenomena, such as sound, light, temperature, position, or pressure, and is achieved using a transducer. An analog signal uses some property of the medium to convey the signal's information. For example, an aneroid barometer uses rotary position as the signal to convey pressure information. Electrically, the property most commonly used is voltage followed closely by frequency, current, and charge. A transducer is a device, usually electrical or electronic, that converts one type of energy to another. ...
Bourdon Tube Type Indicator Side Mechanical Side Mechanical Details A pressure or vacuum gauge usually consists of a closed coiled tube (called a Bourdon tube) connected to the chamber or pipe in which pressure is to be sensed. ...
Schematic drawing of a simple mercury barometer with vertical mercury column and reservoir at base Table of Pneumaticks, 1728 Cyclopaedia A barometer is an instrument used to measure atmospheric pressure. ...
See: Rotary engine Rotary International Rotary milking shed rotary intersections This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...
Pressure (symbol: p) is the force per unit area acting on a surface in a direction perpendicular to that surface. ...
The article on electrical energy is located elsewhere. ...
Sine waves of various frequencies; the lower waves have higher frequencies than those above. ...
Another method of conveying an analog signal is to use modulation. In this, some base signal (e.g., a sinusoidal carrier wave) has one of its properties altered: amplitude modulation involves altering the amplitude of a sinusoidal voltage waveform by the source information, frequency modulation changes the frequency. Other techniques, such as changing the phase of the base signal do also work. Modulation is the process of varying a carrier signal, typically a sinusoidal signal, in order to use that signal to convey information. ...
In mathematics, the trigonometric functions are functions of an angle, important when studying triangles and modeling periodic phenomena. ...
Amplitude modulation (AM) is a form of modulation in which the amplitude of a carrier wave is varied in direct proportion to that of a modulating signal. ...
Frequency modulation (FM) is a form of modulation which represents information as variations in the instantaneous frequency of a carrier wave. ...
Analog circuits do not involve quantisation of information into digital format. The source signal information being measured over the circuit, whether sound, light, pressure, temperature, or an exceeded limit, remains continuous from end to end. See digital for a discussion of digital vs. analog. A digital system is one that uses discrete numbers, especially binary numbers, or non-numeric symbols such as letters or icons, for input, processing, transmission, storage, or display, rather than a continuous spectrum of values (an analog system). ...
Analog operations While operating on an analog signal, an analog circuit changes the signal in some manner or manners. It may be designed to amplify, attenuate, provide isolation, distort, or modify the signal in some other way. It can be used to convert the signal into some other format such as a digital signal. Analog circuits also modify signals in unintended ways such as adding noise or distortion. For the British rock band of the same name, see Amplifier (band) An amplifier can be considered to be any device that uses a small amount of energy to control a source of a larger amount of energy, although the term today usually refers to an electronic amplifier. ...
Attenuation is the decrease of the amount, force, magnitude, or value of something. ...
Isolation can refer to: Isolated point in topology (mathematics) Isolation (psychology), psychological phenomenon. ...
In everyday speech, to distort something is to force it out of its natural shape. ...
A digital system is one that uses discrete numbers, especially binary numbers, or non-numeric symbols such as letters or icons, for input, processing, transmission, storage, or display, rather than a continuous spectrum of values (an analog system). ...
Analog Electronics is frequently confused with other sub-divisions of the general field of Electronics which include Power electronics and Digital electronics. Or in the field of Power Electronics can be the Energy Storing variables such as the current in an Inductor or the Voltage across the terminals of a Capacitor. Any information may be conveyed by an analog signal, often such a signal is a measured response to changes in physical phenomena, such as sound, light, temperature, position, or pressure, and is achieved using a transducer.
Analog signals An analog signal uses some property of the medium to convey the signal's information. For example, an aneroid barometer uses rotary position as the signal to convey pressure information. Electrically, the property most commonly used is voltage followed closely by frequency, current, and charge.
For example, in an analog sound recording, the variation in pressure of a sound striking a microphone creates a corresponding variation in the current passing through it or voltage across it. An increase in the volume or amplitude of the sound causes the fluctuation of the current or voltage to increase proportionally while keeping the same waveform or shape and electrical analog.
Noise - Main article: Electronic noise
The effects of random noise can make signal loss and distortion impossible to recover, ingfact since amplifying the signal to recover attenuated parts of the signal often generates more noise and amplifies the noise as well. Associated with all electronic circuits is noise. ...
Another method of conveying an analog signal is to use modulation. In this, some base signal (e.g., a sinusoidal carrier wave) has one of its properties altered: amplitude modulation involves altering the amplitude of a sinusoidal voltage waveform by the source information, frequency modulation changes the frequency. Other techniques, such as changing the phase of the base signal do also work.
Analog circuits do not involve quantisation of information into digital format. The source signal information being measured over the circuit, whether sound, light, pressure, temperature, or an exceeded limit, remains continuous from end to end.
Clocks with hands are often called analog displays; those that display digits are usually called digital displays. However, many analog clocks are actually digital since the hands do not move in a smooth continuous motion, but in small steps every second or sub division of a second.
Passive versus active Passive analog circuits consume no external electrical power while active analog circuits use an electrical power source to achieve the designer's goals. An example of a passive analog circuit is a passive filter that limits the amplitude at some frequencies vs. others. A similar example of an active analog circuit is an active filter. It does a similar job only it uses an amplifier to accomplish a similar task. A passive component is an electronic component that does not require a source of energy to perform its intended function. ...
Active filters are a special kind of electronic filters. ...
For the British rock band of the same name, see Amplifier (band) An amplifier can be considered to be any device that uses a small amount of energy to control a source of a larger amount of energy, although the term today usually refers to an electronic amplifier. ...
Advantages of a passive analog circuit are it requires no power source, gives off less heat, and may produce less noise. Advantages of an active analog circuit is it can load the signal less, amplify as well as attenuate the signal and by using capacitors in combination with amplifiers it can simulate an inductor. Simulation of inductions has the advantage of reducing weight and cost.
Analog integrated circuit - Main article: Analog chip
Active or passive analog electronic circuits can be fabricated directly onto semiconductor substrates, such as silicon. Such circuits are called analog integrated circuits. They may occur as sub-systems of other digital systems (e.g., an analog comparator in a microcontroller.) Analog integrated circuit design is a highly specialized area. An analog chip uses its active devices primarily in their active regions. ...
A semiconductor is a material with an electrical conductivity that is intermediate between that of an insulator and a conductor. ...
General Name, Symbol, Number silicon, Si, 14 Chemical series metalloids Group, Period, Block 14, 3, p Appearance dark gray, bluish tinge Atomic mass 28. ...
Integrated circuit showing memory blocks, logic and input/output pads around the periphery A monolithic integrated circuit (also known as IC, microchip, silicon chip, computer chip or chip) is a miniaturized electronic circuit (consisting mainly of semiconductor devices, as well as passive components) which has been manufactured in the surface...
Integrated circuit design, or IC design, is a subset of electrical engineering, encompassing the particular logic and circuit design techniques required to design integrated circuits, or ICs. ...
Disadvantages of analog systems The primary disadvantage of analog signalling is that any system has noise, that is random disturbances or variations in it. As the signal is copied and re-copied, or transmitted over long distances, these random variations become dominant and lead to signal degradation. Electrically these losses are lessened by shielding, good connections, and several cable types such as coax and twisted pair and using low noise amplifiers. The effects of random noise can make signal loss and distortion impossible to recover, since amplifying the signal to recover attenuated parts of the signal often generates more noise and amplifies the noise as well. In science, and especially in physics and telecommunication, noise is fluctuations in and the addition of external factors to the stream of target information (signal) being received at a detector. ...
There are a number of uses for the word shield: A shield is a protective device, meant to intercept attacks. ...
Wikipedia does not yet have an article with this exact name. ...
25 Pair Color Code Chart 10BASE-T UTP Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk. ...
Sources: Some of an earlier version of this article was originally taken from Federal Standard 1037C in support of MIL-STD-188.
Analog circuit functions This article is about electronic analog multipliers. ...
The term amplifier as used in this article can mean either a circuit (or stage) using a single active device or a complete system such as a packaged audio hi-fi amplifier. ...
Television signal splitter consisting of a hi-pass and a lo-pass filter. ...
An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave. ...
In electronics, a phase-locked loop (PLL) is a closed-loop feedback control system that maintains a generated signal in a fixed phase relationship to a reference signal. ...
An electronic mixer is a device for mixing two or more electronic signals. ...
Power conversion is the process of converting power from one form into another. ...
This article or section should be merged with Maximum power theorem. ...
A 741 operational amplifier in a TO-5 metal can package An operational amplifier, often referred to as an op-amp, is a DC-coupled electronic differential voltage amplifier, usually of very high gain, with one inverting and one non-inverting input. ...
In electronics, a comparator is a device which compares two voltages or currents, and switches its output to indicate which is larger. ...
A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level. ...
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