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The vector stencils library "Cybersecurity" contains 24 cybersecurity icons.
Use it to design your computer and telecom illustrations and infographics with ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Cybersecurity" is included in the Computers and Communications solution from the Illustration area of ConceptDraw Solution Park.
Danger file folder
Danger file folder, danger file folder,
Antivirus, antivirus, safety, protection,
Privacy, privacy,
Lock, lock,
Key, key,
Web protection
Web protection, web protection,
Screen padlock
Screen padlock, screen padlock,
Login, login,
Web key
Web key, web key,
Lock properties
Lock properties, lock properties, lock settings,
CCTV camera
CCTV camera, CCTV camera,
Hand touch
Hand touch, hand touch,
Touch screen
Touch screen, touch screen,
Server security
Server security, server security,
Server lock
Server lock, server lock, server safety, data security,
Server unlock
Server unlock, server unlock,
Micro SIM card
Micro SIM card, micro sim card,
Alarm file
Alarm file, alarm file,
Repair, repair, wrench and screwdriver,
Phonendoscope, phonendoscope,
Aid kit
Aid kit, aid kit,
Savings protection
Savings protection, savings protection,
System setting
System setting, system setting,
Robot, robot,
The vector stencils library "Telecom" contains 20 telecommunication icons. Use it to design your IT and telecom illustrations and infographics with ConceptDraw PRO diagramming and vector drawing software.
"Telecommunication is the transmission of signs, signals, writings, images and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems, as defined by the International Telecommunication Union (ITU).
Telecommunication occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physical media, such as cables, or via electromagnetic radiation. Such transmission paths are often divided into communication channels which afford the advantages of multiplexing. ...
Modern technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites." [Telecommunication. Wikipedia]
The telecommunication icon set example "Design elements - Telecom" is included in the Computers and Communications solution from the Illustration area of ConceptDraw Solution Park.
Telecommunication icon set
Telecommunication icon set, walkie talkie, transportation, bus, telecommunication, landline phone, support center, satellite, rocket, police radio, phone receiver, hotline, global communication, network, dish antenna, digital phone, cordless phone, communication tower, signal tower, wifi antenna, call center, help center, broadcasting, base station, aviation, antenna tv, active pc, select computer,
The vector stencils library "Computer peripheral devices" contains 18 clipart images of computer peripheral devices and equipment for drawing network diagrams.
"A peripheral is a device that is connected to a host computer, but not an integral part of it. It expands the host's capabilities but does not form part of the core computer architecture. It is often, but not always, partially or completely dependent on the host.
There are three different types of peripherals:
(1) Input, used to interact with, or send data to the computer (mouse, keyboards, etc.).
(2) Output, which provides output to the user from the computer (monitors, printers, etc.).
(3) Storage, which stores data processed by the computer (hard drives, flash drives, etc.)" [Peripheral. Wikipedia]
The clip art example "Computer peripheral devices - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Uninterruptible power supply
Uninterruptible power supply, UPS,
Webcam, webcam,
Keyboard, keyboard,
Optical mouse
Optical mouse, mouse,
Computer speakers
Computer speakers, speakers,
Headphones, earphones,
VoIP phone
VoIP phone, IP phone,
Apple Keyboard
Apple Keyboard, Apple keyboard,
Apple Mouse
Apple Mouse, Apple mouse,
LCD projector
LCD projector, LCD TV projector,
Port adapter
Port adapter, port adapter,
Airport Express
Airport Express, Airport Express,
Joystick, joystick,
Webcam, Web camera,
Video projector
Video projector, projector,

Network wiring cable. Computer and Network Examples

To connect two or more network devices are used the network cables. There are more different types of the network cables: Coaxial cable, Optical fiber cable, Twisted Pair, Ethernet crossover cable, Power lines and others. They are used depending of the network topology, size, protocol.
This example was created in ConceptDraw DIAGRAM using the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
"Smaller mobile devices such as PDAs and smartphones typically use the WIMP elements with different unifying metaphors, due to constraints in space and available input devices. Applications for which WIMP is not well suited may use newer interaction techniques, collectively named as post-WIMP user interfaces.
As of 2011, some touch-screen-based operating systems such as Apple's iOS (iPhone) and Android use the class of GUIs named post-WIMP. These support styles of interaction using more than one finger in contact with a display, which allows actions such as pinching and rotating, which are unsupported by one pointer and mouse." [Graphical user interface. Wikipedia]
"In computing post-WIMP comprises work on user interfaces, mostly graphical user interfaces, which attempt to go beyond the paradigm of windows, icons, menus and a pointing device, i.e. WIMP interfaces. ...
However WIMP interfaces are not optimal for working with complex tasks such as computer-aided design, working on large amounts of data simultaneously, or interactive games. WIMPs are usually pixel-hungry, so given limited screen real estate they can distract attention from the task at hand. Thus, custom interfaces can better encapsulate workspaces, actions, and objects for specific complex tasks. Applications for which WIMP is not well suited include those requiring continuous input signals, showing 3D models, or simply portraying an interaction for which there is no defined standard widget.
Interfaces based on these considerations, now called "post-WIMP", have made their way to the general public. Examples include the interface of the classic MP3 player iPod and a bank's automated teller machine screen." [Post-WIMP. Wikipedia]
The example "iPhone OS (iOS) graphic user interface (GUI) - Activity indicator view" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Graphic User Interface solution from the Software Development area of ConceptDraw Solution Park.
iPhone GUI
iPhone GUI, toolbar, status bar, activity indicator, status bar, simple list, navigation bar, controls, activity indicator,
The vector stencils library "Computers" contains 52 hardware icons.
Use it to design your audio, video and multimedia illustrations, presentations, web pages and infographics with ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Computers" is included in the Audio, Video, Media solution from the Illustration area of ConceptDraw Solution Park.
Workstation, workstation, desktop computer, pc,
Desktop computer
Desktop computer, desktop computer,
Monitor with keyboard
Monitor with keyboard, monitor, keyboard,
iMac, iMac,
Mac computer
Mac computer, mac computer, all-in-one desktop computer,
Monitor, monitor, education diagram, stadium,
Display screen
Display screen, display screen,
Computer monitor
Computer monitor, computer monitor,
LCD monitor 1
LCD monitor 1, lcd monitor,
LCD monitor 2
LCD monitor 2, LCD monitor,
LCD screen 1
LCD screen 1, lcd screen,
LCD screen 2
LCD screen 2, lcd screen,
Web design
Web design, web design,
MacBook, laptop, macbook,
iBook, laptop, iBook,
Laptop 1
Laptop 1, laptop,
Laptop 2
Laptop 2, laptop,
Laptop 3
Laptop 3, laptop,
Laptop 4
Laptop 4, laptop,
Notebook, notebook, laptop,
Online video
Online video, laptop, online video,
Laptop settings
Laptop settings, laptop settings,
Webcam, webcam,
Web camera 1
Web camera 1, web camera,
Web camera 2
Web camera 2, web camera,
Computer camera
Computer camera, computer camera,
Network server
Network server, network server,
Data center
Data center, data center,
Tower computer
Tower computer, tower computer,
Power Mac
Power Mac, Power Mac,
Image scanner
Image scanner, image scanner,
Inkjet printer 1
Inkjet printer 1, inkjet printer,
Inkjet printer 2
Inkjet printer 2, inkjet printer,
Laser printer 1
Laser printer 1, laser printer,
Laser printer 2
Laser printer 2, laser printer,
Cable cord
Cable cord, cable cord,
USB cable
USB cable, usb cable,
Online game
Online game, online game,
Portable gamepad
Portable gamepad, portable gamepad, control pad, game controller,
Game pad
Game pad, game pad, game stick,
Joystick 1
Joystick 1, joystick,
Joystick 2
Joystick 2, joystick,
Car drive
Car drive, car drive,
Glasses, glasses,
3D glasses
3D glasses, 3d glasses,
Calculator, calculator,
iWatch, iWatch, Apple watch, drawing shapes,
Digital clock
Digital clock, digital clock,
Clock, clock, watch,
Timer, timer, logistics,
Waiting, waiting,

Network Glossary Definition

The Network Topology Diagram examples was created using ConceptDraw DIAGRAM software with Computer and Networks solution.
Easy to draw network topology diagrams, network mapping and Cisco network topology.
How to Draw a Computer Network
How to Draw a Computer Network

Network Visualization with ConceptDraw DIAGRAM

ConceptDraw makes the entire process of network visualization easier thanks to the numerous ready-to-use objects included in the package for presentation of network equipment, LDAP directory symbols and many other objects that symbolize resources in most various representations.
The vector stencil library "HVAC controls" contains contains 24 HVAC control symbols: sensors, actuators, timers, controllers, I/ O points.
Use it for drawing HVAC system diagrams, heating, ventilation, air conditioning, refrigeration, automated building control, and environmental control design floor
plans and equipment layouts.
"HVAC (... Heating, Ventilation and Air Conditioning) is a control system that applies regulation to a heating and/ or air conditioning system. ...
Central controllers and most terminal unit controllers are programmable, meaning the direct digital control program code may be customized for the intended use. The program features include time schedules, setpoints, controllers, logic, timers, trend logs, and alarms. The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/ cold water and/ or steam). Digital inputs are typically (dry) contacts from a control device, and analog inputs are typically a voltage or current measurement from a variable (temperature, humidity, velocity, or pressure) sensing device. Digital outputs are typically relay contacts used to start and stop equipment, and analog outputs are typically voltage or current signals to control the movement of the medium (air/ water/ steam) control devices such as valves, dampers, and motors." [HVAC control system. Wikipedia]
The vector stencils example "Design elements - HVAC controls" is included in HVAC Plans solution from the Building Plans area of ConceptDraw Solution
HVAC control symbols
HVAC control symbols, —Āonnector line, wire note, wiring note, voltage sensor, velocity sensor, water, air, timer, time clock, text label, temperature sensor
, smoke detector, smoke controller
, sensor, pressure sensor, power sensor, power connection, light sensor, input, output, point, humidity sensor
, fluid, level, flow sensor, water, air
, equipment vibration sensor, vibration sensor, equipment rotation sensor, rotation sensor, enthalpy sensor, end switch, limit switch, current sensor, air quality sensor, actuator,

Android User Interface

Android is a mobile operating system (OS) based on the Linux kernel and currently developed by Google.
One of the most important features of any Android app is, of course, its Android User Interface. It is all what the user sees on the screen of its device and interacts with. Creating of successful Android User Interface and developing Android UI prototypes may be the mighty task. But we recommend you to make it fast and easy in ConceptDraw DIAGRAM specially extended with Android User Interface Solution from the Software Development Area.
"Fault-tolerant computer systems are systems designed around the concepts of fault tolerance. In essence, they have to be able to keep working to a level of satisfaction in the presence of faults. ...
Most fault-tolerant computer systems are designed to be able to handle several possible failures, including hardware-related faults such as hard disk failures, input or output device failures, or other temporary or permanent failures; software bugs and errors; interface errors between the hardware and software, including driver failures; operator errors, such as erroneous keystrokes, bad command sequences, or installing unexpected software; and physical damage or other flaws introduced to the system from an outside source." [Fault-tolerant computer system. Wikipedia]
The computer network diagram example "Cisco LAN fault-tolerance system" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
LAN fault-tolerance system
LAN fault-tolerance system, workgroup switch, router, network cloud, multilayer switch, eMac, IP phone,
The vector stencils library "Cisco switches and hubs" contains 26 symbols of Cisco switches and hubs for drawing computer network diagrams.
"A switch is a device used on a computer network to physically connect devices together. Multiple cables can be connected to a switch to enable networked devices to communicate with each other. Switches manage the flow of data across a network by only transmitting a received message to the device for which the message was intended. Each networked device connected to a switch can be identified using a MAC address, allowing the switch to regulate the flow of traffic. This maximises security and efficiency of the network. Because of these features, a switch is often considered more "intelligent" than a network hub. Hubs neither provide security, or identification of connected devices. This means that messages have to be transmitted out of every port of the hub, greatly degrading the efficiency of the network." [Network switch. Wikipedia]
"An Ethernet hub, active hub, network hub, repeater hub, multiport repeater or hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/ output (I/ O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming. A hub works at the physical layer (layer 1) of the OSI model. The device is a form of multiport repeater. Repeater hubs also participate in collision detection, forwarding a jam signal to all ports if it detects a collision." [Ethernet hub. Wikipedia]
The symbols example "Cisco switches and hubs - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park. solution-park/ computer-networks-cisco
Cisco hub
Cisco hub, Cisco hub,
100BaseT hub
100BaseT hub, 100BaseT hub,
Small hub
Small hub, small hub,
Workgroup switch
Workgroup switch, workgroup switch,
Workgroup switch, subdued
Workgroup switch, subdued, workgroup switch,
Voice-enabled workgroup switch
Voice-enabled workgroup switch, voice-enabled workgroup switch, voice switch,
ATM switch
ATM switch, ATM switch,
LAN2LAN switch
LAN2LAN switch, LAN2LAN switch,
ISDN switch
ISDN switch, ISDN switch,
MGX 8000 multiservice switch
MGX 8000 multiservice switch, MGX 8000 multi service switch,
Multilayer switch with Si
Multilayer switch with Si, multilayer switch with Si,
Multilayer switch
Multilayer switch, multilayer switch, layer 3 switch,
Multilayer switch with Si, subdued
Multilayer switch with Si, subdued, multilayer switch with Si,
Program switch
Program switch, program switch,
Data center switch
Data center switch, data center switch, service module,
Voice-enabled ATM switch
Voice-enabled ATM switch, voice-enabled ATM switch,
IP DSL switch
IP DSL switch, IP DSL switch,
Content switch
Content switch, content switch,
Content service switch 1100
Content service switch 1100, content service switch 1100,
Virtual layer switch
Virtual layer switch, virtual layer switch,
Layer 2 remote switch
Layer 2 remote switch, layer 2 remote switch,
Server switch
Server switch, server switch,
Multilayer remote switch
Multilayer remote switch, multilayer remote switch,
Multifabric server switch
Multifabric server switch, multifabric server switch,
Access gateway
Access gateway, access gateway,
Long-Reach CPE
Long-Reach CPE, long reach CPE,
The vector stencils library "Interactions" contains 18 interaction elements icons: mouse pointers, splitters, select frame.
Use it to design graphic user interface (GUI) prototypes of your software applications for Windows 8.
"In computing, a pointer or mouse cursor (as part of a personal computer WIMP style of interaction) is a graphical image on the computer monitor or other display device. The pointer echoes movements of the pointing device, commonly a mouse or touchpad, and signals the point where actions of the user take place. It can be used to select and move other graphical user interface elements, and is distinct from the cursor, which responds to keyboard input. The cursor may also be repositioned using the pointer.
The pointer commonly appears as an angled arrow, (angled because historically that improved appearance on low resolution screens) but it can vary within different programs or operating systems. The use of a pointer is employed when the input method, or pointing device, is a device that can move fluidly across a screen and select or highlight objects on the screen." [Pointer (graphical user interfaces). Wikipedia]
The design elements example "Interactions - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Windows 8 User Interface solution from the Software Development area of ConceptDraw Solution Park.
Normal select pointer
Normal select pointer, normal select pointer,
Link select pointer
Link select pointer, link select pointer,
Text select pointer
Text select pointer, text select pointer,
Precision select pointer
Precision select pointer, precision select pointer,
Move pointer
Move pointer, move pointer,
Pan pointer
Pan pointer, pan pointer,
Vertical resize pointer
Vertical resize pointer, vertical resize pointer,
Horizontal resize pointer
Horizontal resize pointer, horizontal resize pointer,
Diagonal resize pointer
Diagonal resize pointer, diagonal resize pointer,
Diagonal resize pointer 2
Diagonal resize pointer 2, diagonal resize pointer,
Row resize pointer
Row resize pointer, row resize pointer,
Column resize pointer
Column resize pointer, column resize pointer,
Window splitter - vertically
Window splitter - vertically, window splitter,
Window splitter - horizontally
Window splitter - horizontally, window splitter,
Working in background pointer
Working in background pointer, working in background pointer, normal select pointer,
Busy pointer
Busy pointer, busy pointer,
Unavailable pointer
Unavailable pointer, unavailable pointer,
Normal select frame
Normal select frame, normal select frame,
The vector stencils library "Transformers and windings" contains 29 element symbols of transformers, windings, couplers, metering devices, transductors, magnetic cores, chokes, and a variometer.
Use it to design the electromechanical device schematics and electronic circuit diagrams.
"A transformer is an electrical device that transfers energy between two circuits through electromagnetic induction. Transformers may be used in step-up or step-down voltage conversion, which 'transforms' an AC voltage from one voltage level on the input of the device to another level at the output terminals. This special function of transformers can provide control of specified requirements of current level as an alternating current source, or it may be used for impedance matching between mismatched electrical circuits to effect maximum power transfer between the circuits.
A transformer most commonly consists of two windings of wire that are wound around a common core to induce tight electromagnetic coupling between the windings. The core material is often a laminated iron core. The coil that receives the electrical input energy is referred to as the primary winding, while the output coil is called the secondary winding.
An alternating electric current flowing through the primary winding (coil) of a transformer generates an electromagnetic field in its surroundings and a varying magnetic flux in the core of the transformer. By electromagnetic induction this magnetic flux generates a varying electromotive force in the secondary winding, resulting in a voltage across the output terminals. If a load impedance is connected across the secondary winding, a current flows through the secondary winding drawing power from the primary winding and its power source." [Transformer. Wikipedia]
"An electromagnetic coil (or simply a "coil") is formed when a conductor is wound around a core or form to create an inductor or electromagnet. When electricity is passed through a coil, it generates a magnetic field. One loop of wire is usually referred to as a turn or a winding, and a coil consists of one or more turns. For use in an electronic circuit, electrical connection terminals called taps are often connected to a coil. Coils are often coated with varnish or wrapped with insulating tape to provide additional insulation and secure them in place. A completed coil assembly with one or more set of coils and taps is often called the windings.
Windings are used in transformers, electric motors, inductors, solenoids, loudspeakers, and many other applications." [Electromagnetic coil. Wikipedia]
The shapes example "Design elements - Transformers and windings" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Transformer and winding symbols
Transformer and winding symbols, variometer, triplex, induction voltage regulator, transformer, magnetic-core, mutual inductor, transformer, magnetic-core, 2 windings, adjustable, transformer, magnetic-core, 1 winding, adjustable, transformer, magnetic-core, transformer, air-core, mutual inductor, transformer, air-core, 2 windings, adjustable, transformer, air-core, 1 winding, adjustable, transformer, air-core, transformer, transductor, saturating transformer, potential transformer, winding, potential transformer, outdoor metering device, magnetic core, linear coupler, induction voltage regulator, current transformer, bushing-type, current transformer, coaxial choke, magnetic core, choke, reactor, adjustable transformer, 1 winding, adjustable transformer,  mutual inductor, 1-phase, induction voltage regulator,
The vector stencils library "Semiconductors" contains 22 symbols of rectifiers, diodes, charge transfer and electronic conduction devices, switches, cathodes, transistors, thyristors, and transceivers for semiconductor (SIS) design.
"Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide, as well as organic semiconductors. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most applications. They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum.
Semiconductor devices are manufactured both as single discrete devices and as integrated circuits (ICs), which consist of a number - from a few (as low as two) to billions - of devices manufactured and interconnected on a single semiconductor substrate, or wafer. ...
All transistor types can be used as the building blocks of logic gates, which are fundamental in the design of digital circuits. In digital circuits like microprocessors, transistors act as on-off switches; in the MOSFET, for instance, the voltage applied to the gate determines whether the switch is on or off.
Transistors used for analog circuits do not act as on-off switches; rather, they respond to a continuous range of inputs with a continuous range of outputs. Common analog circuits include amplifiers and oscillators.
Circuits that interface or translate between digital circuits and analog circuits are known as mixed-signal circuits.
Power semiconductor devices are discrete devices or integrated circuits intended for high current or high voltage applications. Power integrated circuits combine IC technology with power semiconductor technology, these are sometimes referred to as "smart" power devices. Several companies specialize in manufacturing power semiconductors." [Semiconductor device. Wikipedia]
The shapes example "Design elements - Semiconductors" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Semiconductor elements
Semiconductor elements, turn-off triode, thyristor, turn off rectifier, gate turn off rectifier, triac, thyristor, bi-directional triode-type, gated switch, thyristor, diac, controlled switch, thyristor, reverse-blocking tetrode-type, semiconductor controlled switch, controlled rectifier, thyristor, reverse-blocking triode-type, semiconductor controlled rectifier,
The vector stencils library "Cisco telepresence" contains 8 symbols of videoconference and telepresence equipment for drawing Cisco computer network diagrams.
"Videoconferencing is the conduct of a videoconference (also known as a video conference or videoteleconference) by a set of telecommunication technologies which allow two or more locations to communicate by simultaneous two-way video and audio transmissions. It has also been called 'visual collaboration' and is a type of groupware. ...
The core technology used in a videoconferencing system is digital compression of audio and video streams in real time. The hardware or software that performs compression is called a codec (coder/ decoder). Compression rates of up to 1:500 can be achieved. The resulting digital stream of 1s and 0s is subdivided into labeled packets, which are then transmitted through a digital network of some kind (usually ISDN or IP). The use of audio modems in the transmission line allow for the use of POTS, or the Plain Old Telephone System, in some low-speed applications, such as videotelephony, because they convert the digital pulses to/ from analog waves in the audio spectrum range.
The other components required for a videoconferencing system include:
(1) Video input : video camera or webcam.
(2) Video output: computer monitor, television or projector.
(3) Audio input: microphones, CD/ DVD player, cassette player, or any other source of PreAmp audio outlet.
(4) Audio output: usually loudspeakers associated with the display device or telephone.
(5) Data transfer: analog or digital telephone network, LAN or Internet.
(6) Computer: a data processing unit that ties together the other components, does the compressing and decompressing, and initiates and maintains the data linkage via the network." [Videoconferencing. Wikipedia]
The symbols example "Cisco telepresence - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park. solution-park/ computer-networks-cisco
CTS-100, CTS-100,
CTS-200, CTS-200,
CTS-300, CTS-300,
CTS-codec primary
CTS-codec primary, CTS-codec primary,
CTS-codec secondary
CTS-codec secondary, CTS-codec secondary,
Cisco telepresence manager
Cisco telepresence manager, Cisco telepresence manager,
The vector stencils library "Delay elements" contains 12 symbols of delay elements for drawing electrical schematics and electronic circuit diagrams.
"An analog delay line is a network of electrical components connected in series, where each individual element creates a time difference or phase change between its input signal and its output signal. It operates on analog signals whose amplitude varies continuously. An example is a bucket-brigade device. Other types of delay line include acoustic, magnetostrictive, and surface acoustic wave devices. A series of RC networks can be cascaded to form a delay. A long transmission line can also provide a delay element. The delay time of an analog delay line may be only a few nanoseconds or several milliseconds, limited by the practical size of the physical medium used to delay the signal and the propagation speed of impulses in the medium." [Analog delay line. Wikipedia]
The symbols example "Design elements - Delay elements" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Delay element symbols
Delay element symbols, delay element,

Evernote, mindmap, mind map, mindmapping tools Note Exchange

Evernote, mindmap, mind map, mindmapping tools
This solution extends ConceptDraw MINDMAP software with the ability to exchange with Evernote, and access mind maps anywhere, on any computer or mobile device via Evernote.
The circuit diagram example "Bipolar current mirror" was redesigned from the Wikipedia file: Current mirror.png.
[ wiki/ File:Current_ mirror.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [ licenses/ by-sa/ 3.0/ deed.en]
"A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. ...
Basic BJT current mirror.
If a voltage is applied to the BJT base-emitter junction as an input quantity and the collector current is taken as an output quantity, the transistor will act as an exponential voltage-to-current converter. By applying a negative feedback (simply joining the base and collector) the transistor can be "reversed" and it will begin acting as the opposite logarithmic current-to-voltage converter; now it will adjust the "output" base-emitter voltage so as to pass the applied "input" collector current.
The simplest bipolar current mirror ... implements this idea. It consists of two cascaded transistor stages acting accordingly as a reversed and direct voltage-to-current converters." [Current mirror. Wikipedia]
The circuit diagram example "Bipolar current mirror" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Circuit diagram
Circuit diagram, junction, indicator, meter, galvanometer, ground connection, ground, fixed resistor, resistor, bipolar transistor, bipolar junction transistor, BJT, NPN,