Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement?

zxx123 · 19th February 2005, 09:55 PM

I found a strange part from garage. It says that it is an tube rectifier replacement for tube socket.

I tried in my SE amp. It worked, but B+ was higher than tube rectifier. It seems to be a kind bridge diode.

Anybody heard about this brand and part?

Sch3mat1c · 19th February 2005, 10:28 PM

Hm, quite a few hits on Google, though no datasheets yet. Looks to be a replacement for 5U4/5Y3/etc. (any rectifier with that base), rated 1600PIV 0.75A (probably total DC output, not per diode; two series pairs of 1N4007s would be rated 2kV, 2A the same way).

Depending on how old it is, it might be worth something. Or just a piece of junk. *shrug*

Tim

Eli Duttman · 19th February 2005, 10:35 PM

Sakes/Tarzain is a name out of my youth. I can remember when they introduced 500 mA. Silicon diodes that mounted in 3AG fuse holders.

That device is "2" diodes mounted on an Octal socket with a covering can. That the B+ is somewhat higher is to be expected, as PN diodes have a MUCH lower forward voltage drop than vacuum diodes do. Expect a considerable amount of switching noise from those old diodes. If your amp's PSU has a choke in its filter, the noise is removed from the B+. In any event, switching noise could get into the signal path via filament windings on the power trafo.

If you like, run a Google search against 1N????, as that's the part number.

jlsem · 20th February 2005, 02:21 AM

Quote:

That device is "2" diodes mounted on an Octal socket with a covering can. That the B+ is somewhat higher is to be expected, as PN diodes have a MUCH lower forward voltage drop than vacuum diodes do. Expect a considerable amount of switching noise from those old diodes. If your amp's PSU has a choke in its filter, the noise is removed from the B+. In any event, switching noise could get into the signal path via filament windings on the power trafo.

I believe the Tarzian units have a voltage dropping resistor inside as well. They generally have part numbers as drop-in replacements for a variety of tube rectifiers. I have seen many of these used in FAA euipment where application is critical.

John

zxx123 · 21st February 2005, 05:02 AM

I found spec. paper in another box.
They say same as both of you explained to me.
Thanks.

19th February 2005, 10:28 PM	#2
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	Hm, quite a few hits on Google, though no datasheets yet. Looks to be a replacement for 5U4/5Y3/etc. (any rectifier with that base), rated 1600PIV 0.75A (probably total DC output, not per diode; two series pairs of 1N4007s would be rated 2kV, 2A the same way). Depending on how old it is, it might be worth something. Or just a piece of junk. shrug Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

19th February 2005, 10:35 PM	#3
Eli Duttman diyAudio Member Join Date: Apr 2004 Location: Plainsboro, NJ	Sakes/Tarzain is a name out of my youth. I can remember when they introduced 500 mA. Silicon diodes that mounted in 3AG fuse holders. That device is "2" diodes mounted on an Octal socket with a covering can. That the B+ is somewhat higher is to be expected, as PN diodes have a MUCH lower forward voltage drop than vacuum diodes do. Expect a considerable amount of switching noise from those old diodes. If your amp's PSU has a choke in its filter, the noise is removed from the B+. In any event, switching noise could get into the signal path via filament windings on the power trafo. If you like, run a Google search against 1N????, as that's the part number. __________________ Eli D.

21st February 2005, 05:02 AM	#5
zxx123 diyAudio Member Join Date: Aug 2003 Location: ca	Thanks.. I found spec. paper in another box. They say same as both of you explained to me. Thanks.

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