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  • Amazon: selenium rectifier
    Amazon: selenium rectifier

    NTE Electronics NTE120 General Purpose Selenium Rectifier for Color TV Convergence, 65 mA Forward Current, 10V DC Voltage $499 $ 4 99 FREE Shipping Only 2 left in stock - order soon More Buying Choices $195 (5 new offers) RECTIFIER - SELENIUM TV HIGH VOLTAGE 214K

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  • Life and failures of selenium rectifiers
    Life and failures of selenium rectifiers

    Life and failures of selenium rectifiers Too often, when powering an old radio or an electronic set that uses selenium rectifiers in its power supply section, these components fail Symptoms are a quite fast overheating of the rectifiers themselves, a considerable reduction of the AC and

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  • SELENIUM SURGE SUPPRESSOR - CEHCO
    SELENIUM SURGE SUPPRESSOR - CEHCO

    To discuss your specific rectifier stack requirements, please contact us toll free at 714 666-0787, or send us an email at [email protected] (Relevant matches to this category are shown below) Selenium ,

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  • Selenium rectifiers (Barry L Ornitz)
    Selenium rectifiers (Barry L Ornitz)

    Remember that selenium rectifiers have a much greater forward voltage drop with current than do silicon diod Thus when you replace a selenium diode with a silicon diode, expect a higher voltage out of your circuit For most selenium stacks, the DC output is about 2 volts less than the RMS input voltage multiplied by the number of plat

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  • What does a selenium rectifier do? - diyAudio
    What does a selenium rectifier do? - diyAudio

    Apr 15, 2003· Okay, a selenium rectifier is simply a diode whose semiconductor material is selenium, where, usually today, they are made with silicon or germanium Selenium rectifiers often fail after 20 or so years of service and you can replace them with silicon diode rectifiers You'll need to replace it with one that will handle enough current though

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  • Rectifier Selenium, Rectifier Selenium Suppliers and ,
    Rectifier Selenium, Rectifier Selenium Suppliers and ,

    Alibaba offers 106 rectifier selenium products About 3% of these are other metals & metal products A wide variety of rectifier selenium options are ,

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  • selenium rectifier datasheet & applicatoin notes ,
    selenium rectifier datasheet & applicatoin notes ,

    selenium rectifier datasheet, cross reference, circuit and application notes in pdf format

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  • What is a Selenium Rectifier? (with picture)
    What is a Selenium Rectifier? (with picture)

    A selenium rectifier is a type of rectifier that uses selenium, a chemical element that is not a metal, as a semiconductor for electrical conductivity For a certain period of time, the selenium rectifier enjoyed popularity as perhaps the most widely used rectifier Silicon rectifiers eventually took over this title

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  • Selenium Full-Wave Bridge Rectifier Testing
    Selenium Full-Wave Bridge Rectifier Testing

    Selenium Full-Wave Bridge Rectifier Testing Drawn by Jon Pardue 2007 Updated 2013 Selenium Full-Wave Rectifiers 3-wire Ground connection Earth connection - (minus) battery terminal Negative battery terminal Chassis ground Cathode Warning: Do NOT breathe the smoke from a failing rectifier Evacuate the area Selenium is toxic In England its .

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  • Cougar Electronics Corp | Selenium Rectifier & Suppressor
    Cougar Electronics Corp | Selenium Rectifier & Suppressor

    A selenium rectifier is an electronic component that permits free passage of electric current in one direction, but almost completely blocks the flow of current in the opposite direction Like a silicon diode, when an alternating current is applied to a selenium rectifier in series with the load, half of the AC cycle is blocked and the load .

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  • Replacing the rectifier in a vintage car battery charger ,
    Replacing the rectifier in a vintage car battery charger ,

    Aug 17, 2017· I checked with my multi-meter and found the output was like just 024V, opened the case and checked the transformer an it was fine Looks like a blown rectifier-selenium rectifier I guess (pic below) After a futile search found these rectifiers are no longer available, so finally got a KBPC2510 metal bridge rectifier

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  • Selenium Rectifiers, October 1952 Radio & Television News ,
    Selenium Rectifiers, October 1952 Radio & Television News ,

    Dec 09, 2016· The efficiency of conversion in selenium rectifiers is relatively high, usually on the order of 90 per-cent in three-phase, full-wave circuits and 70 per-cent in single-phase, full-wave circuits The nonlinear characteristics of selenium rectifiers contribute to high ,

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  • Selenium recifier | QRZ Forums
    Selenium recifier | QRZ Forums

    Jun 19, 2007· For a time during the 1950s a lot of television sets were made which used selenium rectifiers Even Collins Radio used a selenium rectifier in the S-Line power supply (516F-2) for the bias voltage rectifier (half-wave) Ameco used a selenium rectifier (half-wave) in the power supply for all of their tube-type VHF converters

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  • What's It Worth: Early Components — Rectifiers ,
    What's It Worth: Early Components — Rectifiers ,

    Selenium rectifiers One of the more interesting rectifiers was used after World War II Developed in the 1930s, the selenium rectifier contained a stack of several steel or aluminum plates coated with bismuth or nickel, with a thicker layer of selenium and a halogen element added Each plate could typically withstand 20 to 22 reverse volts and .

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  • Selenium Rectifier In other Diodes for sale | eBay
    Selenium Rectifier In other Diodes for sale | eBay

    Vintage Radio Receptor Co (R&R) Selenium Rectifier, SM1 100 MA 130 VAC NOS, NIB From family estate, original owner Like new condition Box and paperwork $1000 $1300 shipping or Best Offer Watch 5pcs TV18-03 Original New Selenium Rectifier 18KV 003A Diode

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  • Selenium rectifier danger! - SmokStak
    Selenium rectifier danger! - SmokStak

    Aug 02, 2016· Re: Selenium rectifier danger! My observation is that nearly every useful industrial substance is "known to the State of California to cause cancer" But I don't plan on making CFL lamp stew for supper, so I think I'll be OK

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  • Selenium Rectifier Replacement - Google Groups
    Selenium Rectifier Replacement - Google Groups

    Dec 07, 1998· Selenium dioxide is the major compound produced when a selenium rectifier is overheated It can cause severe burns to the mucous membranes and severe respiratory tract, skin, and eye irritation It is also a dermal sensitizer in that it can promote allergic reactions Fortunately it is not consider a carcinogen Another fortunate thing

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  • Replacing selenium rectifier with diode - Gearslutz
    Replacing selenium rectifier with diode - Gearslutz

    May 10, 2014· Hi, I am replacing the selenium rectifier in my Ampex 1/4" machine with a diode but I don't know exactly what to buy The schematic only has two pieces of information about the rectifier

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  • Rectifiers Selenium- Plate rectifier - IRI Selenium ,
    Rectifiers Selenium- Plate rectifier - IRI Selenium ,

    A selenium rectifier is a type of metal rectifier, invented in 1933 They were used to replace vacuum tube rectifiers in power supplies for electronic equipment, and in high current battery charger applications We make customized selenium rectifiers as per the size of plates required and for the capacity required

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  • Testing a Selenium Rectifier – Syscomp Electronic Design
    Testing a Selenium Rectifier – Syscomp Electronic Design

    Oct 25, 2016· The selenium rectifier replaced the vacuum tube rectifier in the period 1950 onward and was in use until the 70’s Selenium rectifiers are recognizable by the cooling fins, which are often painted green or orange We were given a three-phase selenium rectifier, taken ,

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  • 2, 3 and 4 wire Rectifiers
    2, 3 and 4 wire Rectifiers

    efficient than the old selenium based rectifiers (used in the 1970s and earlier) will do a better job of keeping the battery charged All Oregon Motorcycle Parts rectifiers are capable of taking a voltage spike 5 times greater than your bike can make without damage

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  • Metal Rectifiers - Radio Museum
    Metal Rectifiers - Radio Museum

    Selenium rectifiers, developed in Germany, use steel disks on which are deposited a thin layer of selenium, a hard grey coloured element Selenium rectifiers can be constructed in much the same way as their copper oxide equivalent but are more efficient and have a smaller physical size than an equivalent copper oxide type

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  • Can you replace a selenium rectifier with a silicon ,
    Can you replace a selenium rectifier with a silicon ,

    Can you replace a selenium rectifier with a silicon rectifier? The short answer is yes, usually If you are working with an ultra high voltage stack all bets are off For old stereos, etc you .

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  • selenium rectifier | eBay
    selenium rectifier | eBay

    364 results for selenium rectifier Save selenium rectifier to get e-mail alerts and updates on your eBay Feed Unfollow selenium rectifier to stop getting updates on your eBay Feed

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  • Testing Your CT90 Rectifier - Home of the Pardue Brothers
    Testing Your CT90 Rectifier - Home of the Pardue Brothers

    Testing Your CT90 Rectifier We frequently send out this how-to for testing the rectifier using a multimeter for our clients This is our document created specifically for the Honda CT90 Here is a detailed How-To on testing your CT110’s rectifier using a multimeter

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  • Diode replacement for selenium rectifier
    Diode replacement for selenium rectifier

    Selenium rectifiers need the same surge protection as silicon rectifiers do That is the reason for the existing 47 ohm resistor the OP described It is not for voltage reduction, as Leigh mentioned Line-operated (transformerless) amplifiers are not "designed for" any specific voltage, within limits they will take advantage of any they can get .

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  • SELENIUM RECTIFIER - CEHCO
    SELENIUM RECTIFIER - CEHCO

    Selenium rectifier stacks are made up of selenium cells, which are mounted together and circuited as required for each application They are available in configurations to suit all of the rectifier circuits CEHCO is a leader in supplying selenium rectifier stacks We are selenium rectifier ,

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  • Selenium rectifier - Wikipedia
    Selenium rectifier - Wikipedia

    A selenium rectifier is a type of metal rectifier, invented in 1933 [citation needed] They were used in power supplies for electronic equipment and in high-current battery-charger applications until they were superseded by silicon diode rectifiers in the late 1960sThe arrival of the alternator in some automobiles was the result of compact, low-cost, high-current silicon rectifiers

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  • Replacement Parts - universalrectifiers
    Replacement Parts - universalrectifiers

    Replacement Parts Air Cooled & Oil Cooled Cathodic Protection Rectifiers A complete line of industry standard components for replacement purpos Selenium Bridg Aluminum Plate Bridg Heatsink Bridg Bolt-on & Snap-in Fus Diodes & SCR's Bridge Modul Circuit Breakers

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  • Selenium Rectifier - Radiomuseumorg
    Selenium Rectifier - Radiomuseumorg

    Mar 30, 2005· On the topic of retaining a selenium rectifier, it probably is a really good idea to replace it with silicon diod I am not a chemist but I understand that when a selenium rectifier fails it can release toxic gas, and retaining a selenium rectifier adds unnecessary risk for the power transformer

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