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Free online library on electronics Free library:
Encyclopedia of electronics and electrical engineering
Books and magazines
Schematic diagrams and service manuals
Reference books
News of science and technology

Free online library on electronics Free encyclopedia of electronics and electrical engineering:
Alternative energy sources
Assemblies of amateur radio equipment
Audio equipment
Audio-fidelity and speaker volume controls
Ballasts of fluorescent lamps
Bells and audio simulators
Chargers, accumulators, galvanic cells
Citizens' Band radio
Clocks, timers, relays, load commutators
Consumer electronics
Current controllers, voltage and power regulators
Data communication
Digital equipment
Electric installation work
Electric meters
Electric motors
Electric power supply
Electrical safety, fire safety
Electrician's reference book
Electrician's tools
Electricity for beginners
Equipment protection from emergency operation, uninterrupted power supply units
Field intensity detectors
Fluorescent lamps
For a musician
For an electrician
For an inexperienced radio amateur
For radio amateur constructors
For students
Frequency synthesizers
Grounding and neutral grounding
Halogen lamps
High-frequency power amplifiers
Home, garden, farmland, hobbies
Household appliances
Indicators, detecting devices, metal detectors
Infra-red equipment
Lightning protection
Measuring equipment
Microphones, wireless microphones
Mobile communication
Portable radio stations
Power amplifiers
Power controllers, thermometers, thermostabilizers
Power supply units
QRP equipment
Radiation indicators
Radio amateur computation
Radio amateur technologies
Radio control
Radio reception
Radio stations, transceivers
Reference materials
Security and alarm system using mobile communication
Security devices and alarm systems
Sound systems
Sound-to-light units
Upgrade of radio stations
Use of microcircuit chips
Various electronic devices
Voltage stabilizers
Voltage transducers, rectifiers, inverters
Welding equipment

Free online library on electronics Useful articles and background materials:
Art of audio
Art of video
Batteries and rechargeable batteries
Big encyclopedia for children and adults
Biographies of great scientists
Children's scientific lab
Entertaining experiments in chemistry
Entertaining experiments in physics
For builders and handymans
For lovers of travel. Tips for tourists
Fundamentals of health and safety
Fundamentals of medical first aid
History of engineering, technology, objects around us
Home workshop
Industrial technology at home - simple recipes
Labor protection
Lecture notes, cheat sheets
Life of great physicists
Miracles of nature. A fascinating journey around the globe
Spectacular tricks and their solutions
Personal transport: land, water, air
Riddles, puzzles, trick questions
Scale modeling
The most important scientific discoveries
Tools and mechanisms for agriculture
Typical labor protection instructions (Job descriptions)
Visual illusions

Free online library on electronics Free magazines:
A Radio. Prakticka Elektronika magazine
Amaterske Radio magazine
Circuit Cellar magazine
Electronique et Loisirs magazine
Electronique Pratique magazine
Elektor Electronics magazine
Elektronika dla Wszystkich magazine
Elektronika Praktyczna magazine
Everyday Practical Electronics magazine
Evil Genius magazine
Funkamateur magazine
Nuts And Volts magazine
QEX magazine
QST magazine
Radiotechnika Evkonyve magazine
Servo magazine
Stereophile magazine
Радио Телевизия Електроника magazine

Free online library on electronics Free audio, video, tvs schematic diagrams and service manuals:
Popular audio
Popular car audio
Popular DVDs
Popular faxes
Popular monitors
Popular monoblocks
Popular phones
Popular TVs
Popular video cameras
Popular video recorders and video players

Avest TVs
Beko TVs
Elenberg, Cameron, Cortland domestic radio electronics
Erisson TVs
Gorizont TVs
Rainford TVs
Rekord TVs
Roadstar TVs
Rolsen TVs
Rubin TVs
Vestel TVs
Vitjaz TVs

Power supply units for TV sets and video equipment

Free online library on electronics Free mobiles schematic diagrams and service manuals:
Benq-Siemens mobiles
Eastcom mobiles
Ericsson mobiles
Fly Bird mobiles
LG mobiles
Maxon mobiles
Mitsubishi mobiles
Motorola mobiles
Nokia mobiles
Panasonic mobiles
Pantech mobiles
Samsung mobiles
Sharp mobiles
Siemens mobiles
Sony-Ericsson mobiles
TCL mobiles
Voxtel mobiles

Free online library on electronics Free household appliances schematic diagrams and service manuals:
Beko household appliances
Braun household appliances
Candy household appliances
Elenberg household appliances
Elica household appliances
Gorenje household appliances
Hansa household appliances
Merloni household appliances
SEB household appliances
Snaige household appliances
Stinol household appliances
Universal household appliances
Whirpool household appliances

Free online library on electronics Free electric tools schematic diagrams and service manuals:
Bocsh electric tools
Makita electric tools

Free online library on electronics Free electric tools schematic diagrams and service manuals:
Bocsh electric tools
Makita electric tools

Free online library on electronics Free reference books:
Collection of dumps
Correspondence of models and chassis
Horizontal-output transformers by HR company
Horizontal-output transformers by Konig company
Integrated circuits, microcontrollers and transistors
Mechanisms of audio and video equipment
Radio components by Atmel
Radio components by Cirrus Logic
Radio components by Maxim
Radio components by Microchip
Radio components by Mitsubishi
Radio components by Motorola
Radio components by National Semiconductor
Radio components by Panasonic
Radio components by Philips
Radio components by Rohm
Radio components by Samsung
Radio components by Sharp
Radio components by Sony
Radio components by Toshiba
Remote controls for TV sets and monoblocks

News of science and technology




Order of schematic diagrams and service manuals Order of diagrams

Schematic diagrams to order:
World air conditioners
World audio
World car audio
World DVDs
World faxes
World fridges
World microwave ovens
World monitors
World monoblocks
World phones
World photo cameras
World projectors
World TVs
World video cameras
World video recorders
World washing machines

Have fun! Have fun!
Assembling the Rubik's Cube
Did you know?
Entertaining experiments at home
Funny puzzles
Interactive flash games
Optical illusions
Spectacular tricks and their solutions

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Free online library on electronics

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Free online library on electronics Free online library on electronics, Free encyclopedia of electronics and electrical engineering

All articles of the Free encyclopedia of electronics and electrical engineering are listed in alphabetical order. For automatic translation of articles into your native language, please use Translate it! form in the top left corner of the page.

Computer devices

Computer devices

Computer devices. Articles with illustrations and detailed explanations:

2 V from the USB port

5 V from the RS-232 port

A simple analog-to-digital converter - PC prefix

Adapter for powering a laptop in a car

ADSL Telephone Filter

Amplifiers for headphones with power through the computerís USB connector

Analog part of the Sportster 14400 Fax

ATX unit for AT

Audio Power Amplifier in the computer system unit

AUTOFIRE in a computer manipulator

Automatic restart of the computer when it hangs

Automation of the hand scanner

Barcode Reader

Baycom radio modem for PC

Car power source for a laptop, 12/18 V

Car Power Supply for Laptop, 12 / 16-35 V 8 A

Car Power Supply for Laptop, 12/19 V 3 A

Circuit design of power units for personal computers

Computer fan control unit

Computer power supply in amateur radio structures

Computer Tuner

Computer-based logic analyzer

Connecting 2 computers on laser pointers

Connecting a D-100 printer to a PC

Connecting a sound blaster to a telephone line

Connecting the sound card to the telephone line

Contact joystick for PC

Device for monitoring the rotation of the cooler (fan, electric motor)

Diagnostic POST Card for the ISA bus

Docking Monitor Electronics 6105 with IBM PC

Dual-channel oscillographic prefix for PC

Dust is dangerous for a computer

Electrical safety of computers and computer networks

Fan speed controller (1)

Fan speed controller (2)

Fan speed controller (3)

Fan speed controller (4)

Fan speed controller for the computerís power supply unit

Fan Stop Alarms

Features of the use of oxide capacitors in the power supply circuits of microprocessors

Finalizing the USB hub

Fisher-based computer clock

Full description of the 200-watt PC power supply circuit

Gaming Computer Mouse

Generator from a computer mouse

High-quality computer audio Amplifier

Homemade USB 2.0 cable of great length

How to check PonyProg

How to choose or make a USB hub

How to get rid of computer interference

If the image on the monitor screen is unstable

Infrared port for a computer on COM

Infrared port for computer (IrDA)

Intermediate Amplifier for computer sound card

Intermediate Amplifier sound card to eliminate deficiencies

Joystick do-it-yourself

Joystick for PC

K-Line adapter

LapLink / InterLink Parallel Cable

LCD from Nokia 3310 on LPT

Load Switch for Sound Card

Manage programs with the remote control

Modem for ZX Spectrum

Modem Max-2400 (for PC Sinclair

MP3 player - PC prefix

Null Modem 25-25 pin (COM-COM)

Null Modem 9-25 pin (COM-COM)

Once again about switching HDD in a computer


Passive hub for twisted pair

PC manages electrical installations

Power Filter for HDD

Power supply for portable equipment from USB-port

Powering the laptop from the power supply of the old TV

Protection of a computer power supply

PS / 2 to Serial (COM) Mouse Adapter

Refinement of the electronic book Texet TB-840HD

Repairing a laptop battery

SIM card readers (3 options)

SIM Reader

Sound Amplifier for the subwoofer to the computer

Stabilized Laptop Power Supply

Steering wheel and pedals to the computer

TFT backlight recovery

Thermal control for a computer with their own hands

Turn counter for winding a transformer using a computer LPT port

TV from the monitor

TV-IN S-Video Adapter

Two-channel PC-based data collection and processing system

USB devices

USB Port ó 6-15 V Power Supply

USB port - switch

USB-voltage recorder with the functions of the oscilloscope, spectrum analyzer and frequency response meter

Watchdog for the computer

We print an inkjet printer on CD and DVD

What is frame relay?

Who invented the computer

Why did the computer burn down?

All articles of the section Computers:

Computer devices

Computer interfaces

Computer moding

Computers. Miscellaneous

Computers. Using CAD programs