selenium rectifier replace
selenium rectifier replace

Repairing a battery charger Electronics Forum Circuits ,

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Sep 17, 2019 0183 32 The reason I was substituting the bridge rectifier for the selenium is selenium are difficult to find and quite expensive also I have a few 50A 1000V bridge rectifiers left over from a 138V power supply project used with my Amateur Radio transceivers as well as several heat sinks from old computer CPU s...

Transoceanic selenium rectifier replacement

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With the TransOceanic, many seem to cite replacement of the selenium rectifier I will likely get in trouble here, but my A600 has both the original caps, and the selenium rectifier, and works perfectly I have the kit for the solid state replacement that the ,...

how to replace a selenium rectifier with a diode

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Jan 05, 2016 0183 32 sears silvertone console stereo repair part something...

Replacing the selenium rectifier in a vintage car battery ,

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Aug 15, 2017 0183 32 Q1 Can selenium rectifiers be replace by silicon rectifiers? A1 Definitely YES, in fact, most repairs like that should replace It will be an upgrade, making any charger work better BUT care should be taken to size properly the rectifier selected...

Selenium Rectifier Replacement

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Feb 22, 2015 0183 32 02-15-2015, 08 09 PM Paul Philco322 Wrote When those Selenium Rectifiers fail they get very hot and really let off a stink I would replace it, then you can enjoy without worry Paul Thanks Paul Parts are on order and I finally did locate a source that states a 3W 300 to 330 ohm resister in series to make up for the voltage drop Joe...

Two Wire Selenium Rectifier Replacement lilHonda

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Aug 10, 2013 0183 32 I made the rectifier replacement today, checked point gap OK , adjusted valves intake tight , crossed my fingers, saced a chicken, and cranked this CT70 that hadn t been run in years After just a couple it started and ran I still have much to do, some wiring and stuff, but I can t wait for a ride...

Replace Selenium rectifier with silicon diodes

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Jan 02, 2016 0183 32 Tube radios from the 50s often have selenium rectifiers in the power supply, which may need to be replaced, preferably with a silicon diode bridge This is t....

Magic Moment Marantz Model 7 After Modify with Real ,

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Jan 17, 2016 0183 32 Change old selenium to silicon bridge rectifier for tube s filament supply Using STTH6110TV2 ultrafast recovery diode to replace selenium in high voltage rectify too Replace cement coated type with better wirewound resistors from Ohmite...

Selenium Rectifier Replacement

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Dec 30, 2012 0183 32 12-29-2012, 12 10 PM I have another project radio, a Zenith Model Y723 that needs a new rectifier or preferably, a diode replacement I looked on ebay for a NOS selenium rectifier to no avail Zenith has several listed in their parts list such as a Federal 1101A or a Tarzian 100A but I couldn t find these The current rating is 071A...

Dynaco PAS 3 selenium rectifier replacement diyAudio

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Nov 16, 2021 0183 32 Dynaco PAS 3 selenium rectifier replacement Thread starter Crystalboy Start date 2021-11-14 7 09 pm C Crystalboy Member 2021-03-31 12 44 pm 2021-11-14 7 09 pm 1 2021-11-14 7 09 pm 1 Hey all I ve just removed the old selenium rectifier in my PAS 3 I ve mounted a terminal strip with 2 new 4700uF capacitors and 2 1N007 diod I just ....

replacing selenium rectifier help Audiokarma Home Audio ,

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Jun 22, 2019 0183 32 You can therefore replace the selenium with a 1N4007 silicon rectifier and the the 47 ohm resistor with a 100 Ohm 3 watt metal film resistor at either or one end, as long as the banded end of the silicon diode is toward the elyticap string...

Changing selenium rectifier to silicon diode

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2 replace selenium rectifier and resistor with a silicon assembly and a switching regulator set to the desired voltage - presuming you are only talking an amp or two, this is a small assembly that won t need much heat sinking 3 add reverse biased diodes across the coils as suggested above...

HELP with Selenium Rectifier Replacement

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If anyone has links to a specific URL that deals with replacement of selenium rectifiers with modern silicon rectifiers, that would be helpful too Joseph A Tony Dziedzic 2004-06-03 11 20 53 UTC Permalink As I remember, the selenium rectifier is ,...

After Class Working with Selenium Rectifiers, September ,

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Mar 10, 2021 0183 32 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 ....

Selenium Rectifier

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Aug 31, 2005 0183 32 OK, this is a selenium rectifier from GE It was OEM for the Seeburg It s that gray device in the middle of the picture on the right Most people state you should replace these items with modern equivalents According to HHScott, The selenium bridge rectifier can be easily replaced with a suitably rated silicon diode bridge rectifier that ....

Alternative Way to replace a Selenium Rectifier

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Nov 29, 2015 0183 32 The common way to replace a Selenium Rectifier with a Silicon one is by putting a resistor in series with the DC-out-lines to reduce the output voltage - whi....

Correct Way To Replace the Selenium Rectifier on a Tweed ,

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Oct 16, 2012 0183 32 Here is the correct way to replace and install a new IN4007 on a Tweed Amp and removing the Selenium Rectifier This set of photos shows the Sel Rect still fastened to the chassis, but the Green Unit itself is not connected in any way It s just used to hold the small tag-board in place Notice the UN-used terminal...

Selenium rectifier replacement

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Jun 17, 2020 0183 32 Re Selenium rectifier replacement usually Miller welders are 208-230-460 or 230-460-575 The manuals do not reflect this all the time The welder data plate is the only way to tell what the primary voltage of a welder IS Placement of the jumpers is different for both...

Replacing Selenium Rectifiers

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Hello= mingram well that Diode will work to replace that selenium rectifier and far as the resistor goes thats good starting point you might not need that high of wattage but it will not hurtand most of the time you can replace those caps with disc but it sepends on the circuit you also can use a cap like this one from mouser this is what I have been using and they make ,...

The PHILCO Phorum

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Feb 22, 2015 0183 32 I am gathering parts for a little Zenith L403 ac/dc radio from the early 50 s It has a selenium rectifier Zenith p/n 212-5 , and says it s rated for 75 ma, no more info Will a 1N4007 be able to replace that? Should I even replace it at ,...

How do I replace this 40 year old selenium rectifier ,

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Jun 14, 2004 0183 32 One side of the selenium rectifier will be marked with a plus The new rectifier will replace the old one, but the striped end goes to where the end of the selenium was By process of elimination, the unstriped end goes to where the other selenium rectifier lead was The selenium rectifier should be discarded...

Selenium Rectifier Replacement

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diodes are fine 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...

Help replacing selenium rectifier on Scott 299

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Feb 03, 2012 0183 32 Before I continue I would like to replace the selenium rectifier I have read some were that once replaced with a better more efficent rectifier I would need a resistor to drop the load 1st question how do I know the values of the rectifier, according to the schematic alls it says is something about -55v next to it...

Replacing Selenium Rectifier with a ,

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Since this amp chassis is already so small I want to replace the selenium rectifier with a 14007 diode I want to know any tips or methods you guys use doing this I have it ready to mount on a small terminal strip but was curious about proper installation of direction of the cathode and using a dropping resistor in series after the diode...

Seeburg HF100R Jukebox Restoration August 2005

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Aug 28, 2005 0183 32 Selenium Rectifier - Replacement? OK, this is a selenium rectifier from GE It was OEM for the Seeburg It s that gray device in the middle of the picture on the right Most people state you should replace these items with modern equivalents According to HHScott, The selenium bridge rectifier can be easily replaced with a suitably rated ....

Diode replacement for selenium rectifier

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Diode replacement for selenium rectifier Hello all Purchased an RCA 6-ey-3B 45 record player Plugged it in long enough to get the usual e-cap hum Replaced the caps and reinstalled into chassis and turned on, sparks inside pulled it out and checked my wiring All looked good Reinstalled to get the same results...

selenium rectifier QRZ Forums

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Dec 18, 2015 0183 32 In a bias circuit, you should be able to replace the selenium rectifier with a 1N4004 diode If you re trying to preserve the look, you could short the original rectifier and put the 1N4004 in series and hidden underneath It always amazes me what some of the vintage radio restorers will do to preserve the looks of components...

Replacing a selenium rectifier

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Location Baden, PA 15005 I m gathering parts for a Silvertone 8020 that I am recapping, and decided to replace the selenium rectifier that is in it I have read on a few sites that a bridge rectifier can be used, but I m not sure how that would be possible, since, in the schematic, the rectifier appears as a single diode...

Selenium Rectifier

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Mar 30, 2005 0183 32 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...

Replacing Selenium Rectifiers in Zenith Trans

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Here s a step-by step guide on how to replace the selenium rectifier in your Trans-Oceanic 1 Unsolder the wire from the bottom lug of the selenium rectifier 2 Unsolder the 130 ohm sand resistor from the top lug of the selenium rectifier 3 Solder the wire to the top lug of the selenium rectifier 4...