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Circuit diagrams for radio amateurs
Antenna
Shortwave antenna
Antenna amplifiers
Television aerials
VHF antenna
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Ignition system
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Consumer electronics
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Clocks, timers, relays, load switches
House, garden land, hobby
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Power controllers, thermometers, heat
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Field strength detector
Medicine
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Nodes of radio engineering
Generators, heterodynes
Quartz filters
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The signal limiter, compressor
Mixers, frequency converters
Filters and matching devices
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Consumer electronics
Indicators, detectors
Audio Indicator Using LM741
Indicators, detectors
Display #
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All
Articles
Title
Hits
Fire smoke sensor
588
Fuse Monitor
431
General purpose probe-indicator
651
Improved probe 1-400 volts
581
Indication connect electrical appliances to mains 220 volts
515
Indicator high frequency radiation
586
Indicator infrared radiation
564
Indicator mains power
517
Indicator of radiation in the microwave oven
595
Indicator RF current on the cable sheath
554
Infra-Red Level Detector
405
Infra-Red Proximity Detector
425
Invisible Broken Wire Detector
466
Isolated Fuse Fail Indicator
414
LED Bar Off Indicator
432
Led voltage indicator
594
Level switch environments
539
Live Line Detector-Indicator
426
Low Battery Indicator I
555
Low Battery Indicator II
453
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Связанные материалы
Three lock phone
Three options improvised Anti-ANI
Telephone amplifier with inductive sensor
Telephone microprocessor switch 1x5
Telephone informant