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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
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For an inexperienced radio amateur
For radio amateur constructors
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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
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Welding equipment

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Big encyclopedia for children and adults
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Life of great physicists
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Visual illusions

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Everyday Practical Electronics magazine
Evil Genius magazine
Funkamateur magazine
Nuts And Volts magazine
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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
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Radio components by Rohm
Radio components by Samsung
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Radio components by Sony
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Remote controls for TV sets and monoblocks

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Schematic diagrams to order:
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World audio
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World DVDs
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World fridges
World microwave ovens
World monitors
World monoblocks
World phones
World photo cameras
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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.

Measuring equipment

Measuring equipment

Measuring equipment. Articles with illustrations and detailed explanations:

A device for controlling equivalent series resistance

A device for detecting water in fluids with high resistivity

A device for determining inter-turn closures

A device for determining short-circuited coils in coils

A device for determining the dielectric constant of materials

A device for determining the leads, structure and current transfer coefficient of transistors

A device for measuring the capacitance and leakage current of electrolytic capacitors

A device for testing capacitors

A device for testing transistors

A heterodyne field-effect transistor resonator indicator

A heterodyne resonance indicator with an indicator on the LED

A network ammeter to a laboratory autotransformer

A probe to check the validity of operational Amplifiers

A quick-change electronic ohmmeter

A simple audio frequency generator

A simple broadband high-frequency signal generator

A simple capacity meter

A simple digital capacitance meter

A simple digital megohm meter

A simple field indicator

A simple frequency counter from a Chinese receiver

A simple generator of rectangular pulses

A simple LC generator

A simple logical tester

A simple low-frequency and high-frequency signal generator

A simple measuring instrument for capacitance and leakage current of electrolytic capacitors

A simple oscillating frequency generator

A simple oscilloscope

A simple phase indicator

A simple signal strength indicator

A simple stereo generator

A simple temperature-voltage converter

A simple tester for checking diodes and transistors

A simple USB oscilloscope

About measuring exorbitant values ??of parameters

AC Vage meter with a stretched scale

Active probe for an oscilloscope

Active probe on an operational Amplifier for an oscilloscope

AD597 thermal stabilizer

Adaptation for current clamps

Adapter to a multimeter for measuring the current base current transfer ratio of transistors

Amateur Radio Frequency

Ammeter of alternating current with linear scale

Ampervoltmeter for laboratory power supply

Amplifier input shaper frequency meter

Analog Frequency Meter

Anode Vage Indicator

Antenna Current Meter

Audio Frequency Generator

Automotive multilevel Vage indicator

Automotive tester-indicator

Automotive tester-indicator with 1 V resolution

Automotive Vmeter with 0.1 V Accuracy


Battery Capacity Meter

Battery Discharge Alarms

Battery status indicator with audible indication

Battery-Powered Portable Audio Frequency Generators

Betnick to measure the gain of powerful transistors

Buffer to protect the square wave generator

Calibrator for an oscilloscope

Capacitance and Inductance Meter

Capacitance meter and equivalent series resistance of capacitors - prefix to the multimeter

Capacitance meter and equivalent series resistance of oxide capacitors - prefix to a multimeter

Capacitance meter for electrolytic capacitors

Capacitance meter for electrolytic capacitors with leakage test

Capacitance meter on a logic chip

Capacitance meter on logic chips

Capacitance meter with self-calibration

Capacitor Capacity Meter

Capacity meter - prefix to the tester

Capacity meter (1)

Capacity meter (2)

Capacity meter for ionisters and large capacitors

Capacity meter on a logical element

Capacity meter on the operational Amplifier

Carbon monoxide concentration analyzer

Cell phone - a Vmeter and an oscilloscope

Characteristics of the speakers on the oscilloscope screen

Chinese LCD Tester


Coaxial dummy load

Combined frequency meter

Communication cable integrity control device

Compact Frequency

Compact Frequency Counter - Digital Scale up to 200 MHz with LCD display

Compact small-beam oscilloscope multimeter

Compensation current sensor with magnetic shunt

Completion of the MY-67 multimeter

Computer control of measuring equipment mechanisms

Computer tester for troubleshooting in the PC system unit

Computer TV tuner as a frequency meter

Converter for powering a digital multimeter


Current meter for the radio station

DC Vmeter with automatic selection of measurement limits

DDS generator

Delayed sweep in the oscilloscope

Determinant of wire cable numbers with voice indication

Determination of the saturation current of inductors with magnetic cores

Determining the line impedance

Device for locating a cable break

Device for testing electrolytic capacitors

Device for testing high-voltage transistors

Device for testing quartz resonators

Device for tuning radio equipment

Diagnosis Tester

Digital Capacitance Meter

Digital Capacity and Internal Resistance Meter

Digital Frequency Meter

Digital Indicator Diagram

Digital LCD-oscilloscope

Digital mini-voltmeter with LCD

Digital Multimeter M830B. Circuit diagram, description, specifications

Digital Multimeter M832. Circuit diagram, description, specifications

Digital Multimeter M890G. Circuit diagram, description, specifications

Digital Multimeter Thermometer

Digital Noise Generator

Digital Noise Generator for Acoustic Measurements

Digital Oscilloscope

Digital phosphor oscilloscopes

Digital scale of the audio frequency generator

Digital Transistor Parameter

Digital Vmeter with automatic selection

Display of eight signals on the oscilloscope screen

D-trigger timer

Dual-channel oscillographic prefix for PC

Dual-zone thermometer on a PIC controller

Economical avometer

Economical multifunction frequency counter

Electronic circuit tester using a computer LPT port

Electronic Contactless Micrometer

Electronic Curvimeter

Electronic Event Recorder

Electronic micrometer

Electronic phase meter

Embedded digital Vmeter with a measuring range of -199.9 ... +199.9 mV

Embedded Vmeter on PIC12F675

Fast dBm conversion table in V and W at 50 ohm load

Fill factor meter

Five-level Vmeter

Flat cable dialer

Forgotten radio meteorology

Four-level economical tester

Frequency measurement using an autometer

Frequency meter

Frequency meter - digital scale

Frequency meter - digital scale on PIC16CE625

Frequency meter - digital scale with LCD

Frequency meter as a generator of fixed frequencies

Frequency meter on a chip

Frequency meter on the microcontroller

Frequency meter up to 1 GHz

Frequency meter up to 1250 MHz

Functional DDS generator

Functional generator on a logic chip

Functional generator with a frequency meter

Functional generator with electronic frequency tuning

Generator - Audio Tester

Generator for checking and tuning consumer radio equipment

Generator for repairing radio equipment

Generator of the drawn signal

GPIB-RS-232 Interface Converter

Hall current sensor

Harmonic oscillator on digital control logic elements

heterodyne resonance indicator - wave meter - quartz calibrator

Heterodyne Resonance Indicator 1.8 ... 150 MHz

High Frequency Bridge Oscilloscope Console

High Frequency Bridge VHF Band

High Frequency Signal Generator

High Frequency Wmeter and Noise Generator

High Vage Tester

High-frequency ammeter for shortwave

High-frequency current indicator on the cable sheath

High-speed temperature meter

How to determine the characteristic impedance of high-frequency coaxial cable, if its type is unknown?

How to determine the resonant frequency of a quartz resonator using radio measuring devices in amateur conditions

How to make a cheap spectrum analyzer expensive

IF generator for tuning receivers

Improved heterodyne resonance indicator

Improved logical tester

Improvement of the pre-frequency divider

Improving the capacitance and inductance meter

Increasing the input resistance of a Vmeter to 1 GOM

Indicator of current or power consumption

Indicator of equivalent series resistance of oxide capacitors

Indicator of short-circuited turns

Indicator of short-circuited turns in coils with ferromagnetic cores

Inductance meter and capacitance

Infrared Indicator

Instrument for tuning SW antennas

Interference simulator for checking network filters

KBV meter with auto-calibration

KSV meter of direct reference


L and C meter

Laboratory synthesizer MW (1)

Laboratory synthesizer MW (2)

LC meter (1)

LC meter (2)

LC-meter - prefix to the multimeter

LED phase indicator

LED Vage Indicator

LED Vmeter, 10.25-15 V

LF harmonic generators

Light and sound tester

Line Vage Vmeter with a stretched scale

Linear Ohmmeter

Linear Vmeter

Logic tester

Logic tester - prefix for a digital multimeter

Logic tester for static and dynamic modes

Logic tester on a single chip

Logic tester with high input resistance

Logical tester on two chips

Logometric thermometer

Loudspeaker impedance meter

Low Frequency on Integrated Circuits

Low harmonic signal generator

M838 Digital Multimeter Circuit diagram, description, specifications

Making test probes

Matrix LED indicator thermometer

Measurement of a phase with a multimeter

Measurement of capacitance and equivalent series resistance of capacitors by a combined instrument

Measurement of current transfer ratio by multimeter

Measurement of electrical quantities

Measurement of inductance by a combined device

Measurement of nonlinear distortion on the noise signal

Measurement of non-linearity of the sweep Vage

Measurements in fiber-optical information transmission systems

Measures ... relay

Measuring device for power supply

Measuring devices on neon lamps

Measuring instrument of a resonant frequency of a dynamic head

Measuring instrument of equivalent series resistance of oxide capacitors

Measuring instrument of full conductivity of broadcasting antennas

Measuring instrument of short-circuited turns

Measuring instruments for carbon monoxide concentration

Measuring microphone

Measuring the error of current and Vage sensors

Measuring the frequency of signals with a long period

Measuring the parameters of field-effect transistors

Measuring Til-Small parameters at home

Megger-prefix to the multimeter

Microcontroller capacitance meter

Microcontroller determinant of the bipolar transistor footing

Microparadometer (1)

Microparadometer (2)

Milliommeter - prefix to the multimeter

Millivoltmeter AC

Mini tester on discrete elements

Miniature Generator

Miniature Oscillographic Tester


Minimum Operating Vage Indicator

Model aircraft tachometer

Moisture meter with capacitive sensor

Multifunction Frequency

Multi-limit Vmeter with linear scale

Multimeter Charging Console

MW generator with phase locked loop: Attachment to high frequency generator

MW oscillographic detector

MW Radiation Indicator

MW-divider for the frequency meter

Narrowband source of oscillating frequency

Network Monitoring

New features of the DT-830B multimeter

New modes in the combined measuring device

Noise Bridge, for tuning antennas

Noise Generator Tester

Non-linear distortion meter of audio Amplifiers

NWT prefix for testing LC circuits

Once again about the power of the digital multimeter from the network

Operational Amplifier Tester

Oscillographic TV set-top box


Oscilloscope ... without a tube

Oscilloscope Calibrator

Oscilloscope Frequency Converter

Oscilloscope generator for setting up satellite receivers

Paint thickness gauge

Pairing a digital multimeter with a computer

Peak Rectifier

Phase Indicator

Phase skew indicator


Phasometer on the operational Amplifier

Pocket Multimeter

Pocket oscilloscope up to 1 MHz

Portable bridge for measuring R and C on two transistors

Power meter

Power supply for the multimeter M890G

Powering the multimeter M-832 from two batteries

Powering the Multimeters of the M-83x Series from a Single Battery

Pre-amplifier-shaper for FC250 frequency meter

Precision Vage or Current Indicator

Prefix for measuring frequency characteristics

Prefix for measuring small resistances

Prefix for temperature measurement with a digital multimeter

Prefix for the frequency meter to measure C

Prefix on a tunnel diode

Prefix to a digital Vmeter for measuring resistance

Prefix to a multimeter for measuring battery parameters

Prefix to a multimeter for measuring capacitance of capacitors

Prefix to a multimeter for measuring capacitance of capacitors (1)

Prefix to a multimeter for measuring capacitance of capacitors (2)

Prefix to a multimeter for temperature measurement

Prefix to the frequency meter

Prefix to the frequency meter for resonant measurements

Prefix to the frequency meter to determine the resonant frequency of the parallel oscillatory circuit

Prefix to the frequency meter to test transistors

Prefix to the oscilloscope

Prefix with a magnetic modulator

Prefixes for measuring nonlinear distortion

Prefix-frequency meter to the multimeter

Prefix-meter LC to a digital Vmeter

Prefix-oscillator of the oscillating frequency for the ranges 300 ... 900 and 800 ... 1950 MHz

Probe for checking the P-N transitions

Probe indicator for logical signals

Probe of electrical circuits and radioelements (1)

Probe of electrical circuits and radioelements (2)

Probe of oxide capacitors (1)

Probe of oxide capacitors (2)

Probe with acoustic and light indication

Probe with sound indication

Probe-comparator for the frequency meter




Probe-voltage divider for digital multimeter

Protection Device for Inverter Converter

Pulse finder of the place of damage to the communication line

Pulse Vmeter

Quartz Calibrator

Quartz chaotic oscillator

Quartz meter-frequency meter

R, C, L Meter on Chips

Radio Tester

Rationale for choosing a modern oscilloscope

RC generator with capacitive tuning

RCL wide-band meter

Refinement of programmers for guaranteed programming PCF8582 chips

Refinement of the AC ammeter

Refinement of the device for measuring the complex resistance

Refinement of the FC250 frequency meter

Refinement of the frequency meter control unit

Refinement of the logic tester

Refinement of the multimeter DTI82

Remote antenna indicator

Remote measurement of electrical resistance

Remote probe - frequency divider by 10 for the frequency meter FC250

Remote probe - frequency divider up to 500 MHz for the frequency meter FC250

Remote probe sound tester

Repair of a multimeter

Repair the oscilloscope

Replacing the CD4060B chip in an amateur frequency counter

Resistive noise generator

Resonant Frequency Counter

RMS Vmeter - prefix to the multimeter

Search for defective items using a thermometer

Self-made high-resistance Vmeter

Setting the digital multimeter temperature meter

Signal indicator on the little engine

Signaller device

Silent antenna tuning

Simple amateur radio devices for measuring inductance

Simple ohmmeter

Simple Q-METP

Simple Universal Tester

Simple Vage indicator

Simplest oscilloscope

Simplified ultrasonic gasoline octane meter

Sinusoidal oscillator on LM386 chip

Small-sized Vmeter

Solar batteries in multimeters and radio receivers

Sound and light tester

Sound test of quartz resonators

Sound Tester

Sound tester-ohmmeter (1)

Sound tester-ohmmeter (2)

Spark flaw detector

SRT device

SSTV test signal generator

Stork instead of the Crocodile

Sweep Generator for an Oscilloscope

Switch frequency meter - capacity meter

SWR meter for VHF range

Tag Generator

TDS-meter - prefix to the multimeter

Test device of the transistor, measure hfe

Test probe for diode-transistor logic

Tester for checking printed circuit boards

Tester for monitoring the energy intensity of batteries

Tester for Ni-Cd and Ni-MH AA batteries

Tester for the selection of quartz resonators

Tester for thyristors and triacs

Tester in your pocket

Tester of diodes and bipolar transistors

Tester of operational Amplifiers

Tester of the fitter

Testing the operational Amplifiers

Testing transformers and inductors

The determinant of the identity of substances

The device for the selection of containers

The device for the selection of thyristors

The line Vage indicator on the LM3914N-1 microcircuit

The oscillating frequency generator (1)

The oscillating frequency generator (2)

The oscillating frequency generator is 0.15 - 230 MHz

The oscillating frequency generator is 1.8 - 230 MHz

The oscillating frequency generator with an Alitude-frequency characteristic indicator on the LCD

The power-off timer for a multimeter

The simplest signal generator on one zener diode

The simplest tester from the old TALKING talking clock

Thermometer-prefix for a digital multimeter

Thickness Gauge

Tonal impulse generator in the control stand

Tracer Generator

Transformer Testing Device

Transformer Testing Technique

Transistor tester with which you can test transistors without soldering them from the circuit

Tunable square wave generator

Tuning antennas and circuits using a noise generator

Turn counter for winding a transformer using a computer LPT port

Turning a digital indicator into a digital thermometer

TV as an oscilloscope

Two analog frequency meters

Two beams from one

Two schemes of simple oscillating frequency generators

Two variants of the statistical measure of the level of radiation

UHF signal generator

Ultrasonic Gasoline Octane Meter

Ultraviolet intensity meter

Ultra-wideband Amplifier

Universal device of a car enthusiast

Universal Electrician Tester

Universal Functional Generator

Universal Test Indicators

Universal Tester (1)

Universal Tester (2)

Universal tester for checking transistors' fitness

Universal Tester Generator

Universal tester with ionist power

USB LC meter

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

VGA Tester

VHF reflectometer (100-600 MHz)

Voltage and current meter

Voltage Availability Indicator

Voltage converter on the microcontroller to power the measuring device

Voltage Difference Indicator

Voltage gain indicator

Voltage indicator with audible indication

Voltmeter - indicator for laboratory power supply

Voltmeter on the LED

Voltmeter with improved linearity

Water Detector

Water Level Meter

Wide-band electronic level meter with linear scale

Wideband function generator

Work of a generator of standard signals with a high-frequency bridge

Zener diode identifier