Sort-of a follow-up to How to ground a vintage device that was powered without a ground? in that the device is the same. I finally took the leap and opened up the old charger (depicted in the linked question). The plan is to replace the Selenium rectifier/s by Silicon. The Se rectifiers have two marks as follows . Vertical '15360' Horizontal ...
30/03/2005· Thank you so much for the excellent explanation of the use of the silicaon diodes for the bridge rectifiers for our vintage radios. In your third paragraph which discusses the "initial" high peak voltage seen at the first PS capacitor, after replacing the selenium plates in the original AEG in my Opus 55TS, the "power on" DC voltage immediattely rises to almost 365volts and peaks there for no more …Vacuum tube phono cartridge04/11/2009Old capacitor markings14/11/2007emud: 176; Rekord27/12/2006Selenium rectifiers: failures and restoring tips
15/08/2017· Replacing the selenium rectifier in a vintage car battery charger. Ask Question Asked 4 years ago. Active 1 year, 4 months ago. Viewed 3k times 1 1 \$\begingroup\$ My battery just died yesterday (actually left the lights on). Took it out for charging today but my new automatic charger for detect such low voltage to begin the charging process. So, I had to hook it up to my great old Lucas …2
19 小时前· General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. Thread Tools: Today, 4:45 pm #1: mickm3for. Heptode . Join Date: May 2015. Location: Chatham, Kent, UK. Posts: 507 Selenium rectifier LT 148. Hi any one have pin out of this rectifier type LT 148 it has 5 tags 2 on one side and 3 on the other the 2 tags are AC in the 3 ? …
device commonly found in vintage electronic equipment—mfe. S elenium rectifiers are often found in TVs, amplifiers, and test equipment dating from the late 1940s to late 1960s. If the equip-ment is to be renovated, the selenium units should be replaced. This article will discuss some background on selenium devices, their benefits and drawbacks, why they need to be replaced, and how to do the … 290KB
vintage vintageOverviewConstructionUsePropertiesReplacementSelenium diode computer logicFurther readingA 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were used in power supplies for electronic equipment and in high-current battery-charger applications until they were superseded by silicon diode rectifiers in the late 1960s. The arrival of the alternator in some automobiles was the result of compact, low-cost, high-current silicon rectifiers. These units were small enough to be inside the alternator case, unlike the selenium units that preceded silicon devices. Wikipedia · CC-BY-SA 许可下的文字
02/08/2016· 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, radio's etc. (Larger than the early Litton Microwave ovens.)User Interaction Count: 30
Buy Qty 1 IRC Selenium Rectifier E075L 130V 75mA Vintage NOS Package in Vaudreuil-Dorion, Quebec, Canada, for US $9.50. Qty 1 IRC Selenium Rectifier E075L 130V 75mA. New old stock (NOS) item. Original package with some shelf wear.
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 the reverse direction. This *does* cause a hazard of overcurrent where … vintage vintage
05/08/2021· VINTAGE SELETRON SELENIUM Half Wave RECTIFIER 6Q2-250 MA. $5.95 + shipping + shipping + shipping. Pair Vintage Siemens Selenium Rectifier SSF B30C1600 Kc 3.6A 24/1 Germany. $26.99. $29.99 previous price $29.99 previous price $29.99 + $4.99 shipping + $4.99 shipping + $4.99 shipping. M30C1800 30V 1800mA 1.8A Vintage Russian USSR Bridge Selenium Rectifier …卖家评价: 85.7% 好评