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CircuitsRadio, a resource for engineers, hobbyists, inventors & consultants, is a collection of 12,000+ electronic circuits or electronic schematics cross-referenced into 500+ categories to find quick solutions for electronic design problems. Bad links are removed and new circuits or schematics are added frequently. This site contains lots of FREE electronic circuits (schematics) & do-it-yourself (DIY) circuit diagrams for hobbyists, students, professionals etc. covering a wide range of categories in electronics like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few. There are also links to sites that offer hobby electronic kits and other electronics hobby related stuff. Use the menu on the left to browse different circuit categories. OVER 10.000 SCHEMATICS & DIAGRAMS (Catalogue of Electronic Circuits)   Search scheme:    OR AND Example: Infrared control system       To search in all categoriesAntiqueAudioAutoAuto AudioCamcordersCellular communicationComputerData processingDigital/MicrocontrollersDomesticFiltersGames/EntertainmentsHigh VoltageInterfacesLight/Laser/IRMedicineMetersMiscellaneousMotor controlsMusicNetworksOscillatorsPDA interface and schematicPower SuplyPreamplifiersRadioRC ModelingRepairSecuritySolar energySwitchingTelephoneTransmittersTV/MonitorsVideo   Electronic schematics: Telephone (Found: 435)   Telephone:   401. Telephone line audio interfacing circuits Source: Tomi Engdahl's Electronics Pages 402. Telephone Line Monitor Source: http://www.ee.washington.edu/ 403. Telephone Line Monitor Source: Sam Electronic Circuits 404. Telephone Line Monitor Source: Electronics 2000 405. Telephone Line Monitor (Plans) Source: Circuits Archive - Univesity of Washington 406. Telephone line monitor. If you feel that somebody is tampering with your telephone line you might find this little circuit useful. It detects if there is another telephone connected to the line, if there is a short or an open line. (simple) Source: Bubblegate 407. Telephone line simulator Source: http://www.hotspot.freeserve.co.uk/ 408. Telephone Line Vigilant [ File in a format zip ] Source: Electronics 2000 409. Telephone music on hold box Source: http://www.designnotes.com/ 410. Telephone Number Display [ File in a format zip ] Source: Electronics 2000 Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Datasheet catalog Repair Schematics Developers Books Palm software chinovnikam.net

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