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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

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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.

Oscillators, heterodynes

Oscillators, heterodynes

Oscillators, heterodynes. Articles with illustrations and detailed explanations:

144/27 MHz Converter with a smooth local oscillator

A little about the generator of a smooth range

A sampler generator - Amplifier

A simple generator for learning the telegraph alphabet

A simple generator of rectangular pulses

A simple KB signal generator

A simple modulated generator

A simple radio frequency generator

About frequency stabilization of the generator of a smooth range

Additive Triangular Wave Conditioner

Air-cooling systems for generator lamps

Audio Frequency Generator (1)

Audio Frequency Generator (2)

Audio Range Function Generator

Biphasic generator with adjustable pause

CMOS chip generators

Coaxial cable - inductor

Continuous oscillation generator

Digital auto-tuning in the local oscillator

Dual-frequency generator with flashing LED

Electronically Switched Quartz Generator

Experiments with a quartz supergenerator

First heterodyne receivers

FP generator on the K174UN7 chip

Frequency meter as a generator of fixed frequencies

Frequency meter-generator clock at AT89S8252

Functional generator with electronic frequency tuning

Generator - audio frequency probe

Generator for the measuring bridge

Generator on PIC16F84A and AD9850

Harmonic Quartz Generators

High Frequency Oscillators with a power level of a few tens of W

High Frequency Wmeter and Noise Generator

High-frequency barrier generators on bipolar transistors

High-frequency generator of increased stability (up to 200 MHz)

High-frequency generator on low-frequency quartz

High-frequency generator with a stable output Vage

Highly stable point-to-point generator

Ledless crystal oscillator

Light pulse generators

Local oscillator for a SW transceiver

Local oscillator of an amateur transceiver

Local oscillator with PLL

Low-frequency generator on a tunnel diode

Modulated high-frequency generator

Probe generator for testing radio equipment


Programmable Vage level generator

Pulse generators on the flashing LED

Quartz generator

Quartz oscillator on a tunnel diode

Quartz oscillators (1)

Quartz oscillators (2)

Quartz supergenerator (Super VXO)

Radio-frequency noise generator for blocking radio traffic

Reference Generator

Short pulse generator

Short-wave signal-generator

Signal Generator

Signal Generators

Smooth frequency control generator for P134

Smooth range generator

Smooth range generator to VHF transverters

Soft-band generator for a 5.5 MHz IF

Sound Watchman - tone generator

Square-wave pulse generators on CMOS chips

Stabilization of the frequency of the continuous range generator

Stable crystal oscillator

Stable frequency modulated oscillator

Stable generator for VHF transmitter

Stable generator of a smooth range (up to 30 MHz)

Stable high frequency generator

Stable local oscillator VHF converter

Stable low-noise crystal oscillator for microwave and transverters

Stable oscillator

Stable quartz oscillator operating in a wide range of supply Vages

Stable smooth range generator

Stable transistor generator

Superheterodyne without inductors

Synchronous heterodyne receiver VHF FM signals

Tag Generator

Theory: autogenerators

Theory: Sine-Wave Generators

Three frequency generator circuits for improvised structures

Tonal impulse generator in the control stand

Two CMOS oscillators

Two-frequency generator

Two-transistor crystal oscillator

UHF signal generator

Universal Functional Generator

Universal generator-probe

VFO transistors

VFO with electronic adjustment

VHF LO with phase locked loop

VHF radio frequency synthesizer

Video signal generator on the PIC controller

All articles of the section Assemblies of amateur radio equipment:

Assemblies of amateur radio equipment. Crystal filters

Assemblies of amateur radio equipment. Filters and matching devices

Assemblies of amateur radio equipment. Miscellaneous

Assemblies of amateur radio equipment. Modulators

Assemblies of amateur radio equipment. Oscillators, heterodynes

Assemblies of amateur radio equipment. Signal limiters, compressors

Assemblies of amateur radio equipment. Mixers, frequency converters