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- English An antique carborundum crystal radio detector from 1911 determination method: SHA-1...(235 × 171 (10 KB)) - 16:28, 2 February 2024
- DescriptionCartridge carborundum detector.jpg English: A carborundum crystal detector, an early semiconductor diode, used as a radio detector in 1920s radios...(355 × 102 (6 KB)) - 05:36, 6 February 2024
- DescriptionCarborundum crystal detector.png English: A carborundum crystal detector, a device used in wireless receivers and later crystal receivers from...(1,212 × 708 (93 KB)) - 16:28, 2 February 2024
- DescriptionCarborundum Detector, Dunwoody.jpg The Carborundum Detector, discovered by General H. H. C. Dunwoody, U.S.A. Date 1917 Source earlyradiohistory...(301 × 234 (19 KB)) - 16:28, 2 February 2024
- DescriptionCarborundum detector & bias battery 1928.jpg English: A carborundum crystal detector used in early vacuum tube radio receivers, from a 1928...(327 × 350 (27 KB)) - 16:28, 2 February 2024
- File:Telephony without wires (IA telephonywithout00couriala).pdf (matches file content)Crystal Detectors Carborundum Detector 224. Response Curve 225. Fleming Valve Detector 226. Sensitiveness for Curve for Valve Detector . . ...(635 × 1,018 (34.21 MB)) - 02:09, 12 May 2024
- penumatic infrared mosaic detector ( ) Author Bischof, Ernest J.;Dobson, John F. Title A penumatic infrared mosaic detector Publisher Monterey, California:...(1,225 × 1,639 (3.47 MB)) - 02:58, 30 June 2023
- File:Vacuum tubes in wireless communication - a practical textbook for operators and experimenters (IA vacuumtubesinwir00buchrich).pdf (matches file content)This tuner is of the inductively coupled type and is fitted with a carborundum detector. The wave length is variable between 200 and 3,500 meters. END TURN"...(793 × 1,318 (13.64 MB)) - 09:11, 12 December 2020
- File:California Digital Library (IA wirelesstelegrap00morgrich).pdf (matches file content)Detectors; Crystal Detectors; Sensitive MinCarborundum Detectors; Silicon Detectors; Mounting Crystals; Fusible Alloys; Perikon Detector; Selection of Minerals;...(712 × 1,079 (26.18 MB)) - 09:38, 12 May 2024
- File:Practical wireless telegraphy; a complete text book for students of radio communication (IA cu31924021408897).pdf (matches file content)Action of the Carborundum Crystal. 132. Adjustment of Crystal Detectors. 133. Detector Holders. 134. Classi135. Fleming Valve Detector and Tuning Circuits...(862 × 1,366 (13.54 MB)) - 19:03, 13 February 2023
- File:Practical uses of the wave meter in wireless telegraphy (IA practicalusesofw00maubrich).pdf (matches file content)meter (Fig. 6) is shunted by a circuit containing a detector of the crystal type, such as carborundum, the sensibility of which is not affected by nearby...(845 × 1,347 (16.31 MB)) - 03:20, 11 May 2024
- File:A study of wireless telegraphy and wireless telephony (IA studyofwirelesst00elea).pdf (matches file content)sensitiveness." These detectors depend for their action on the rectifying and thermoelectric qualities of various crystals, such as carborundum galena, silicon...(1,093 × 1,568 (6.68 MB)) - 19:22, 30 June 2023
- File:An elementary manual of radiotelegraphy and radiotelephony for students and operators; (IA elementarymanual00flemrich).pdf (matches file content)detector Crystal detectors Dunwoody's carborundum detector Pierce's researches on crystal detectors. 8. Electrodynamic oscillation detectors Fleming copper...(864 × 1,316 (25.11 MB)) - 00:22, 9 August 2023
- File:An elementary manual of radiotelegraphy and radiotelephony for students and operators (IA flemingmanual00flemrich).pdf (matches file content)oscillation valve or glow lamp detector Crystal detectors Dunwoody's carborundum detector Pierce's researches on crystal detectors Rectifying contacts of pairs...(866 × 1,322 (26.73 MB)) - 22:44, 10 May 2024
- File:Radio-telegraphy, (IA radiotelegraphy00monc).pdf (matches file content)microphonic detector—Thermo-electric detectors — The carborundum detector—The telephone receiver—Potential versus current detectors—Testing the detector—Regulation...(1,197 × 1,893 (15.84 MB)) - 10:56, 2 June 2022
- File:Radio craft - radio booklet no. 1 (IA radiocraftradiob00sola).pdf (matches file content)Making the Condenser 20 Plate of the Condenser 21 Making a Detector 22 Plate of a Detector 23 Receiving Transformer or Loose Coupler Plate of Receiving...(1,150 × 837 (1.07 MB)) - 10:18, 17 April 2022
- File:The home handy book, a compendium of useful things to do around the average house and how to keep it in repair (IA homehandybookcom00coll).pdf (matches file content)clock—How an electric door alarm—How to make an elecelectric gas fire detector—How to install an fixing tric ix 38 46 — CONTENTS PAGE CHAPTEB lighting...(1,179 × 1,810 (9.55 MB)) - 05:59, 24 February 2021
- File:NIST research reports (IA nistresearchrepo770nati).pdf (matches file content)and ceramic composites under Test Results will Will Compile OS! Carborundum use a NIST high- temperature wear test facility and other special...(1,239 × 1,643 (2.8 MB)) - 08:54, 16 March 2022
- File:Wireless time signals. Radio-telegraphic time and weather signals transmitted from the Eiffel Tower, and their reception (IA cu31924101157364).pdf (matches file content)extremely easily deranged and the sensitiveness of the detector destroyed. In detector. this way a detector may be easily made with an ordinary sewing needle...(625 × 1,010 (2.36 MB)) - 01:22, 10 May 2024
- File:The thermionic valve and its developments in radio-telegraphy and telephony (IA thermionicvalvei00flemrich).pdf (matches file content)Starting with Dunwoody's discovery of crystal detectors. the rectifying property of certain crystals of carborundum and with the discoveries of Pickard and...(722 × 1,168 (19.48 MB)) - 16:58, 22 December 2020