• Thumbnail for Selenium rectifier
    A selenium rectifier is a type of metal rectifier, invented in 1933. They were used in power supplies for electronic equipment and in high-current battery-charger...
    9 KB (1,118 words) - 09:02, 15 June 2025
  • Thumbnail for Metal rectifier
    A metal rectifier is an early type of semiconductor rectifier in which the semiconductor is copper oxide, germanium or selenium. They were used in power...
    6 KB (735 words) - 22:04, 23 December 2024
  • Thumbnail for Diode
    Diode (redirect from Silicon rectifiers)
    They slowly lost market share beginning in the late 1940s due to selenium rectifier technology and then to semiconductor diodes during the 1960s. Today...
    64 KB (7,336 words) - 22:38, 28 April 2025
  • Thumbnail for Rectifier
    Physically, rectifiers take a number of forms, including vacuum tube diodes, wet chemical cells, mercury-arc valves, stacks of copper and selenium oxide plates...
    64 KB (8,984 words) - 19:27, 4 January 2025
  • Thumbnail for All American Five
    tube rectifier was of inferior performance, as they typically had no IF amplifier tube, although some four-tube designs with a selenium rectifier in place...
    20 KB (2,880 words) - 15:55, 4 April 2025
  • Thumbnail for Selenium
    similar devices. Selenium's semiconductor properties found numerous other applications in electronics. The development of selenium rectifiers began during...
    78 KB (10,154 words) - 13:20, 13 June 2025
  • rectifiers, thyratrons, ignitrons, and vacuum diodes. Solid-state technology was in its infancy, represented by copper oxide and selenium rectifiers....
    4 KB (503 words) - 10:34, 3 January 2025
  • Thumbnail for Fleming valve
    range of electronic devices, until beginning to be replaced by the selenium rectifier in the early 1930s and almost completely replaced by the semiconductor...
    11 KB (1,405 words) - 06:34, 12 May 2025
  • but at the time the effect had no practical use. Power rectifiers, using copper oxide and selenium, were developed in the 1920s and became commercially...
    47 KB (5,520 words) - 14:53, 20 June 2025
  • Thumbnail for Kirkuk–Haifa oil pipeline
    Signal Co., Ltd. provided combination units of a transformer and a selenium rectifier housed in a common cooling oil bath, the whole device bulky enough...
    66 KB (6,026 words) - 17:50, 10 June 2025
  • Thumbnail for Semikron
    value 1954 Start of Semikron semiconductor manufacturing: selenium rectifier plates and selenium surge voltage protective devices According to Semikron,...
    7 KB (704 words) - 08:45, 2 April 2025
  • including Selenium rectifier and method of making it, Directly heated thermocouple, Photoresistive translating device, Selenium rectifier including tellurium...
    19 KB (1,785 words) - 13:37, 13 December 2024
  • Thumbnail for Vibrator (electronic)
    copper-oxide/selenium rectifier, or by an additional set of mechanical contacts (in which case the vibrator acts as a type of synchronous rectifier). The rectified...
    8 KB (938 words) - 22:20, 6 March 2025
  • Thumbnail for P–n junction
    discovery of p–n junctions in Cu2O and silver sulphide photocells and selenium rectifiers. The modern theory of p-n junctions was elucidated by William Shockley...
    19 KB (2,718 words) - 18:54, 12 June 2025
  • Thumbnail for Thallium
    detection. Doping selenium semiconductors with thallium improves their performance, thus it is used in trace amounts in selenium rectifiers. Another application...
    52 KB (5,779 words) - 14:36, 23 May 2025
  • stoves and rectifiers founded in 1935. In 1944, Dengen Kogyo Co., Ltd. was created by Dengensha to meet the high demand for selenium rectifiers for use by...
    6 KB (537 words) - 16:55, 3 November 2024
  • Thumbnail for Doping (semiconductor)
    known empirically in such devices as crystal radio detectors and selenium rectifiers. For instance, in 1885 Shelford Bidwell, and in 1930 the German scientist...
    40 KB (5,211 words) - 03:21, 23 May 2025
  • Thumbnail for Westinghouse Brake and Signal Company
    oxide and selenium rectifier shops, electro-plating shop. The assembly and erection shops included wiring shops for signalling equipment, rectifier equipment...
    9 KB (942 words) - 12:36, 30 October 2024
  • Thumbnail for Power electronics
    suitable for high voltage direct current power transmission. In 1933 selenium rectifiers were invented. Julius Edgar Lilienfeld proposed the concept of a...
    62 KB (8,063 words) - 21:11, 24 May 2025
  • suitable for high voltage direct current power transmission. In 1933 selenium rectifiers were invented. HVDC converter Edwin James Houston; Arthur Edwin Kennelly...
    43 KB (5,031 words) - 17:15, 15 June 2025
  • Thumbnail for Faller
    Model Motoring system. The Faller controller and the car had a small selenium rectifier on board so two cars could run independently on the same track on...
    4 KB (432 words) - 01:42, 3 June 2024
  • area rectifier appeared around 1926 which consisted of a copper(I) oxide semiconductor thermally grown on a copper substrate. Subsequently, selenium films...
    23 KB (2,601 words) - 15:14, 23 May 2025
  • Thumbnail for Electric power industry
    high voltage direct current (HVDC) power transmission. In 1933, selenium rectifiers were invented. Transistor technology dates back to 1947, with the...
    27 KB (3,143 words) - 11:38, 8 April 2025
  • Thumbnail for Trans-Oceanic
    1LN5, 1LA6, 1LN5, and 1LD5. Zenith used a selenium rectifier on later versions of the T/O, replacing rectifier tubes used on the earlier models. Inserting...
    16 KB (2,021 words) - 00:21, 20 April 2025
  • transformer. metal rectifier A rectifier made from copper oxide or selenium; formerly widely used before development of silicon rectifiers. micro combined...
    148 KB (19,294 words) - 14:03, 30 May 2025
  • Thumbnail for Kombinat Mikroelektronik Erfurt
    Harnau" Großräschen, former Gleichrichterwerk Großräschen — selenium rectifiers and silicon rectifier diodes VEB Werk für Fernsehelektronik Berlin (WF) — CRTs...
    35 KB (2,837 words) - 16:00, 15 April 2025
  • Thomas; Vesborg, Peter C. K. (2022). "Origin of photovoltaic losses in selenium solar cells with open-circuit voltages approaching 1 V". Journal of Materials...
    54 KB (2,525 words) - 16:50, 24 May 2025
  • layer in solar cells of Cu2O and silver sulphide photocells and selenium rectifiers. In current terms, this was a discovery of p–n junctions around the...
    3 KB (443 words) - 04:52, 29 December 2022
  • Thumbnail for Fender Harvard
    amplifier, using a basic cathodyne phase inverter, but did include a selenium rectifier in the bias circuit. The 5F10 was discontinued in 1961. The extremely...
    5 KB (549 words) - 00:49, 10 November 2023
  • transformer – s-domain – SDTV – Segmentation (image processing) – Selenium rectifiers – Semiconductor device – Semiconductor fabrication – Semiconductor...
    51 KB (3,721 words) - 19:35, 10 April 2025