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Circuit diagrams for radio amateurs
Antenna
Shortwave antenna
Antenna amplifiers
Television aerials
VHF antenna
Audio
Auto electronics
Batteries, chargers
Electric car scheme
Electronic devices
Electronic fuel injection
Ignition system
Security devices and alarm
Speedometers and tachometers
Power supplies
Radio transmitters
Telefonie
Consumer electronics
Bells and audio simulators
Clocks, timers, relays, load switches
House, garden land, hobby
Indicators, detectors
Metal detectors
Power controllers, thermometers, heat
Other
Field strength detector
Medicine
Lighting
Wireless microphones
Television and video
Nodes of radio engineering
Generators, heterodynes
Quartz filters
Modulators
The signal limiter, compressor
Mixers, frequency converters
Filters and matching devices
Other
Main
Nodes of radio engineering
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Articles
Title
Hits
12/24/48 V D.C. Tester
696
220vAC Operated Remote Tester
694
4-20mA Current Loop Tester
782
A method of manufacturing ballasts for TX
736
A Very Simple LED Tester
700
Active RF switch
817
Amplifier with negative feedback
1157
An increase in the frequency of quartz
746
Antenna switch
849
Automated search of correspondents
749
Battery Tester Circuit Schematic
789
Battery Tester For Deaf and Blind Persons
722
Broadband transformer with a conversion ratio of 3/2
937
Cable Analyser
711
Cable Tester Uses Quad Latch
852
Capacitor Leakage Adaptor For DMMs
938
Car and Motorcycle Battery Tester
635
Cheap AC Current Measurement
741
Cheap And Cheerful Transistor Tester
651
Circuit Board Checker
679
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