SRS-360 East German transmitting tubes - diyAudio
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Old 17th May 2009, 08:24 PM   #1
oshifis is offline oshifis  Hungary
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Default SRS-360 East German transmitting tubes

I found two pieces of these babies at a cleanup... Googleing for them:

http://www.radiomuseum.org/tubes/tube_srs360.html

Are they of any good for, say a SE triode amp or something?
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Old 17th May 2009, 09:19 PM   #2
Colt45 is offline Colt45  Serbia
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can't find too much on em. apparently equiv with a RS630.

Looks like you'll have to run ludicrous plate voltage, or grid current, or both. gonna need a gigantorg output trafo too...

http://frank.pocnet.net/short/054/3/387.pdf
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Old 17th May 2009, 09:21 PM   #3
Colt45 is offline Colt45  Serbia
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here's paper for the western equiv, philips TB3/750
http://www.mif.pg.gda.pl/homepages/f.../t/TB3-750.pdf
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Old 18th May 2009, 09:19 AM   #4
oshifis is offline oshifis  Hungary
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Good info, thanks a lot. Can they be operated in "starved mode", that is let's say Ua=500V, Ia=100mA in AB1 setting (no grid current)?
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Old 18th May 2009, 10:40 PM   #5
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Quote:
Originally posted by oshifis
Good info, thanks a lot. Can they be operated in "starved mode", that is let's say Ua=500V, Ia=100mA in AB1 setting (no grid current)?

Looking at the tb3-750 curves above you can see that at 500V, 100mA is ON the Vg=0 curve so grid current is required to get any output.
On the other hand at 1500-1800V on the plate and a decent 10K opt 20-40W triode SE power is acheivable i A1. if you have a driver that can source some 30 mA grid current you could get some 60-70w in A2 at similar plate voltages.

But please don't even think about it if you're not comfortable with the high voltages involved.

/Olof
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Old 19th May 2009, 07:18 AM   #6
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Of course. 5V/14A if a stiff requirement for heating. If you're going that far, you might as well not starve the poor beast at the plate.
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