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Circuit diagrams for radio amateurs
Antenna
Shortwave antenna
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Television aerials
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Clocks, timers, relays, load switches
House, garden land, hobby
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Power controllers, thermometers, heat
Other
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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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Audio
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Articles
Title
Hits
“Hum” Remover
978
100W Audio Amplifier with Transistor BDW83D/BDW84D
2470
100W RMS Amplifier
1515
100W RMS Audio Amplifier
1183
10W Audio Amplifier with Bass-boost
1144
10W Mini Audio Amplifier
1118
11W Stereo/22W Mono Power Amp Using TDA1519C
1566
12V Stereo Tone Control
2341
12W Audio Amplifier based MOSFET 2SK135 / 2SJ50
1602
140W Power Amplifier with STA5100
1030
1500W Power Amplifier
1236
150W Power Amplifier
1162
18W + 18W Stereo Hi-Fi Audio Amplifier (TDA2030)
1246
18W Audio Amplifier
1004
18watt Audio Amplifier
1060
1W BTL Audio Amplifier
1472
2 Way Speaker Box Design
2465
2 x 1.2W Dual Power Amplifier with KA2214
1578
2 x 10 Band Stereo Graphic Equaliser
1399
2 x 30W Audio Amplifier with STK-465
3659
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