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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.

Audio equipment

Audio equipment

Audio equipment. Articles with illustrations and detailed explanations:

120 W Audio Amplifier with Phase Inverter

A device for listening to magnetic soundtracks

A Simple Mic Mixer

A simple radio microphone

A simple radio microphone on one transistor

About reducing detonation in a tape drive mechanism

About the lamp-field-bipolar-chip audio power Amplifier

About the manufacture of output transformers for lamp Amplifiers of audio power frequency

About the operation of noise suppressors

Active Audio Coupler

Active filters on field-effect transistors

Active signal splitter for stereo phones

Adapter for CD player

Again about the development of tape recorders

Amplifiers for headphones with power through the USB connector of the computer

An audio power Amplifier with a Vage Amplifier according to a common base circuit

Audio Audio Complex

Audio Power Amplifier 2x40W on TDA2051 Chip

Audio power Amplifier for MOSFETs

Audio Power Amplifier on LM1875 Chip

Audio transmission via IR channel

Automatic turning on of PC speakers

Balun Amplifier for electret microphone

Bespedalnaya Wow-prefix

Bias generator

Car Audio

Car noise insulation: detecting and suppressing noise sources

Car sound: diagrams and the correctness of their choice

CD-ROM CD Player

CD-ROM drive as an audio CD player

Coaxial head in the center channel speaker

Combined feedback in the audio power Amplifier

Combined record level indicator

Completion of the Toshiba TX-20 car audio

Computer Tuner

Contactless speaker protection

Corrector of Alitude-frequency characteristics of Linkwitz in low-power low frequency Amplifiers

Digital Audio Amplifier

Digital microphone for teaching feathered imitation

Digital tape recorder

Digital Voice Recorder on a Single Chip

Distortion effect devices on field-effect transistors

Dolby Noise Reducer

Dynamic bias in a tape recorder

Dynamic biasing system with separate adjustment in the channels

Dynamic filter - noise suppressor

Dynamics - a second life

Electromechanical feedback signal extraction device

Electronic Level Control

Electronic parrot for voice recording and playback

Electronic Reverb

Eliminating clicks when turning on and off the equipment


Erase current generator and bias

Feedback Surprises

Ferrite magnetic heads for recording and features of their use

Filling wireless FM microphones

Five-band equalizer

FM radio microphone on two transistors, 65.8 ... 74 MHz

Four-channel cassette recorder

Four-channel home theater Amplifier with LG remote control player

Frequency synthesizer for broadcasting receiver on LM7001J + PIC16F84A chips

Galvanic isolation of audio and video input

High quality interconnect patch cables

High-level input from the car stereo to the Amplifier

Hitchhiking for a tape recorder

Home theater - from a to z. Part 1

Home theater - from a to z. Part 2

Home theater - from A to Z. Part 3

How does a CD sound (conjecture and reality)

Imported heads in domestic tape recorders

Instead of a microphone - a dynamic head

KA2206 Low-Frequency Amplifier

KA22061 low-frequency Amplifier

Karaoke Converter

Karaoke from the Electrophone

KIA6205 Low Frequency Amplifier

KIA6210 Low Frequency Amplifier

LA4550 Low Frequency Amplifier

LED output power indicator

LED power output

LED signal level meters

LED Spectroanalyzer

LIEN radio microphone

Light Acoustic Installations

Line input and output in a radio tape recorder and its refinement

Linear output in the radio tape recorder

LM12 Low Frequency Amplifier

Load Switch for Sound Card

Low Frequency

Low Frequency Amplifier for Portable Radio Equipment

Low Frequency Amplifier on LA4180 Chip

Low Frequency Amplifier on LA4182 Chip

Low Frequency Amplifier on LA4183 Chip

Low Frequency Amplifier on LA4555 Chip

Low Frequency Amplifier on LA4558 Chip

Low Frequency Amplifier on mPC1335V Chip

Low Frequency Tube Amplifier with Deep Negative Feedback

Microgout for the FM band

Microphone Amplifier

Microphone Amplifier with Balanced Input

Microphone with a narrow directivity

Micropower frequency modulated transmitter

Microprocessor Audio Switch


Mixing and branching cascades

Mixing Console Input Module

Modern microphones and their use

MP3 and Opus audio player

Multiband Filterless EQ

Multichannel Amplifier

Music CD Player

Narrow Directional Microphone

Noise limiter in pauses

Noise Reducer for a 12 V Unipolar Power Sound Card

Operating experience of a car DVD player

Output power arrow indicator

PA04 Low Frequency Amplifier

Parametric equalizer for the modular remote

Passive tone controls

PC output to headphones

Peak output power indicator

Player - for two

Power Amplifier cooling fan control device

Prefix for pseudo-quad sound

Pseudo-quadrophone prefix to the audio Amplifier

Radio Microphone (1)

Radio Microphone (2)

Radio microphone at frequencies of 350 ... 450 MHz

Radio microphone for lecturers

Radio microphone on two transistors

Radio Microphone, 88 ... 108 MHz

Reducing the noise of the magnetic recording path with the system of adaptive dynamic bias

Refinement of the CD player

Remote control of the tone control

Replacing the chip in a tape recorder

Restoration of a tape recorder

Restoration of audio recordings from a magnetic tape and turntable

S / PDIF Adapter

SI1050 Low Frequency Amplifier

Signal Level Indicator

Signal Level Indicators

Signal strength indicator - stereo balance indicator

Silencer of a modern stereo system

Simple megaphone with siren mode

Single-ended, high-quality tube power Amplifier

Six-band graphic equalizer

Six-channel stereo mixer for active loudspeakers

Soundproofing a car with noise absorbers

Soundtrack - without wires

Spectra of harmonic distortion in electronic tubes

Sven HP-830B Speaker System with Dual-Band Audio Power Amplifier

Switch of inputs with mixing

TA8205 low-frequency Amplifier

TA8215H-A low frequency Amplifier

TDA1514 Low Frequency Amplifier

TDA1558 Low Frequency Amplifier

TDA2004 low-frequency Amplifier

TDA2025 Low Frequency Amplifier

The dbx noise reduction system - past and present

Three-channel multimedia audio power Amplifier

Three-transistor radio microphone

Three-way loudspeaker with W21 EX 001 head

Timbre of high-quality low-frequency stereo Amplifiers

Timbre with fixed settings

Tone-balanced volume control with active bass correction

Touch input switch

Transistor Audio Power Amplifier with High Dynamic Thermal Stability

Trifonik for a radio tape recorder for simple Amplifiers

Triodes single-ended tube Amplifier

Truth and tales of high-quality sound reproduction

Universal control unit on the LM1040 chip

Upgrading your car stereo

Vibration isolation of a vehicle

Voice memo on ISD1416 (ISD1420) chip

Wearable Radio Adjustment Unit

Wireless listening of stereo sound