Selenium rectifier - Wikipedia
Jump to navigation Jump to search. An 8-plate 160 V 450 mA Federal brand 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were used in power supplies for electronic equipment and in high-current battery-charger applications until they were superseded by silicon diode rectifiers in the late 1960s.
SELENIUM RECTIFIER - CEHCO
5994C. 6024C. 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.
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What is a Selenium Rectifier? (with picture)
Jun 01, 2020 · The selenium rectifier rose to prominence when vacuum tube rectifiers failed to provide the sufficient amount of amperes of electrical current needed to charge the batteries on automobiles. A notable advantage of the selenium rectifier was the ability of the user to stack more plates to increase the devices voltage endurance.
After Class: Working with Selenium Rectifiers, September ...
Jun 12, 2012 · Per Wikipedia, "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. The photoelectric and rectifying properties of selenium were observed by C. E. Fitts around 1886 but practical ...
Antique Radio Forums • View topic - Selenium Rectifier To ...
Ive never replaced a Selenium Rectifier so this is all new to me. A Google search turned up dry so I wanted to give you guys a shot at it before it hits the parts bin. Its listed on the side "T(diode symbol)R + (then under that) TO65U" below are pictures of it, and some from the schematic. Its listed at 65 MA.
Selenium Rectifier Replacement
Dec 30, 2012 · I have another project radio, a liming Model Y723 that needs a new rectifier or preferably, a diode replacement. I looked on ebay for a NOS selenium rectifier to no avail. liming has several listed in their parts list such as a Federal 1101A or a Tarzian 100A but I couldnt find these. The current rating is .071A.
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 dont know exactly what to buy. The schematic only has two pieces of information about the rectifier. The current rating is listed as .460A (measured) on the parts list. On the actual schematic it says 1 1/2 amp.
Antique Radio Forums • View topic - Selenium Rectifier ...
This difference between Selenium rectifier and Silicon rectifier series resistance as well as voltage drop per plate is the reason an added 100 Ohm to 200 Ohm series resistor is often installed when replacing a Selenium rectifier with a Silicon rectifier (trying to get the voltage down where the radio/TV design expects it to be). Curtis Eickerman
Selenium rectifier danger! | Smokstak® Antique Engine ...
Aug 02, 2016 · Yeah, selenium rectifiers were the popular "solid state" rectifier to get around 5U4 and other high vacuum rectifiers. As a teen, I was given a Korean(?) war vintage US Army 12v/28v power supply/battery charger for tanks, trucks, radios etc. (Larger than the early Litton Microwave ovens.)
Selenium Rectifier - Rich Bonkowski – W3HWJ
ment. Two small selenium “stacks” could easily replace a type 80 or 5Y3 vacuum tube rectifier in many circuits. Since each plate of the selenium stack could support about 30 volts, you will typ-ically find 5 or 6 plates in a 120 Vrms rectifier. Tube rectifiers need filament power to ther-mally stimulate electron flow. The 5Y3, for exam-
Old Time Selenium Rectifiers - Can someone explain them ...
Sep 22, 2005 · Selenium rectifiers are allso semiconductor devices but amorphouse. In old days we used to say taht each plate of rectifier can whithstand about 30V of reverse voltage and that each square centimeter of its surface can whitstand 100mA of current. You should count number of plates connected in series and calculate area of plate.
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 ...
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 …
Vibrolux 5F11 - Selenium Rectifier - Music Electronics Forum
Aug 17, 2007 · Vibrolux 5F11 - Selenium Rectifier 07-10-2007, 07:04 PM. I am in the process of building a 5F11 Vibroluxe and am wondering about the Selenium Rectifier listed on the circuit. All of the amps I have built are cathode biased, so I have no experience in this area. Should I simply replace it with just a 1N4007 or does it make more sense to set it ...
how to replace a selenium rectifier with a diode - YouTube
Jan 05, 2016 · Replace Selenium rectifier with silicon diodes - Duration: 9:01. Electronics Old and New by M Caldeira 11,260 views. 9:01. battery charger rectifier test and repair 1:2 - Duration: 10:01.
Re: [Jukebox-list] AMI G80 Selenium Rectifier to Bridge ...
Selenium rectifiers generally fail open. This means that when they go bad they stop allowing current to pass at all. Like a burned-out light bulb there is no hazard of overcurrent requiring a fuse. Silicon rectifiers such as the replacement bridge generally fail shorted. This means that when the rectifier fails it will allow current to flow in ...
Life and failures of selenium rectifiers
Selenium rectifiers were rated for almost infinite continuous service life, over than 60.000 hours, according to this . 1951 GE ad. In comparison high-rel vacuum tubes had life expectancies between 5.000 and 10.000 hours. Failures in selenium rectifiers are therefore unrelated with their age. In the collection there are many old radios and
Help, please, with a selenium rectifier replacement question
Oct 22, 2010 · In the parts list of the kg650 the part is listed as a selenium rectifier, 50MA, part number 620007. If not can you please suggest any current component that will replace it. thank you, tex. Like Dislike : simplex1040 Posts: 40 Join date: 2010-10-12: