Are 6DJ8/6922s the same as E88CC?
Boinkster
While searching for a local distributor I found a site, which
lists this part as equivalent to the E88CC.
Are the two items are equivalent?
Thanks in advance for any advice
B
Jorge Santos
They are equivalents!! The E88CC is a premium version but interchangeable
with the others.
Regards
Jorge Santos
"Boinkster" <lord...@hotmail.com> wrote in message
news:ea628c7b.02091...@posting.google.com...
Gregg
E88CC would be a total different animal if the type existed ;-)
--
Gregg
*It's probably useful - even if it can't be SPICE'd*
Check out the cool electronics forum at:
http://www.dutchforce.com/~eforum/index.php
Fred Nachbaur
Gregg wrote:
> ECC88
>
> E88CC would be a total different animal if the type existed ;-)
>
> --
> Gregg
Actually, the type does exist.
http://frank.nostalgiaair.org/sheets/030/e/E88CC.pdf or
http://www.jj-electronic.sk/tube_e88cc.htm .
But that brings up a question I've wondered about re: European
numbering; ECC88 means 6v (E), dual triode (CC) "type" 88. Why do some
manufacturers call it E88CC, and what are the "objective" differences?
TDSL/PE lists these two as "identical or close" or "different ratings/
performance" vis-a-vis 6922 and 6DJ8. Similarly, there are E81CC, E82CC
and E83CC corresponding to the "big three" of dual triodes we all know
and love.
Enquiring minds want to know...
Fred
--
+--------------------------------------------+
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| Projects, Vacuum Tubes & other stuff: |
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Gregg
<fnac...@netscape.net> wrote:
>
>
>Gregg wrote:
>> ECC88
>>
>> E88CC would be a total different animal if the type existed ;-)
>>
>> --
>> Gregg
>
>Actually, the type does exist.
>http://frank.nostalgiaair.org/sheets/030/e/E88CC.pdf or
>http://www.jj-electronic.sk/tube_e88cc.htm .
She's ECC88 on the pic though??? :-/
My place to check types is the N7JP database and it wasn't there. My
error :-(
Henry 007
believe that I don't know.
"Gregg" <nos...@unknown.com> wrote in message
news:3d8942d0...@news.telus.net...
Gregg
<future_unity@say_no_to_spam_hotmail.com> wrote:
>I have an E82CC, apparently they are a "special quality" ECC82... Whether I
>believe that I don't know.
Maybe I'll overstamp 7AX12 on a 12AX7 and sell it as a super duper
toob from Mir or something ;-)
Xavier van Unen
> I have a design for a tube (valve) DAC which lists 6DJ8/6922 valves.
> While searching for a local distributor I found a site, which
> lists this part as equivalent to the E88CC.
> Are the two items are equivalent?
The 6DJ8 and ECC88 are (exact) equivalents. The 6DJ8 is the American type
and the ECC88 is the European type. The E88CC is a "special quality"
(better) ECC88. According to the 1958 Philips datasheet, the E88CC is a
low-noise, low-microphony, long-life version of the ECC88. The (American)
industrial 6922 type is equivalent to the E88CC.
Nowadays:
Modern production ECC88, E88CC, 6922, 6DJ8 are all (more or less) equivalent
and interchangeable. They can (and probably will) sound different though.
Regards Xavier.
Zvonimir Ervacic
According to Philips databook:
ECC88 (6DJ8):
RF double triode intended for use as cascode amplifier in tuners for TV
receivers.
E88CC (6922):
Special quality double triode designed for cascode circuits, HF or IF
amplifiers, mixer or phase inverter stages, multivibrator and cathode
follower in computers.
E188CC (7308):
Special quality double triode designed for use as cascode amplifier,
cathode follower etc. in RF and AF circuits.
I believe all datas are same for all 3 tubes except heating current.
Microphonic and hum resistance culd be different too.
Best,
Erv
fnac...@netscape.net says...
> But that brings up a question I've wondered about re: European
> numbering; ECC88 means 6v (E), dual triode (CC) "type" 88. Why do some
> manufacturers call it E88CC, and what are the "objective" differences?
> TDSL/PE lists these two as "identical or close" or "different ratings/
> performance" vis-a-vis 6922 and 6DJ8. Similarly, there are E81CC, E82CC
> and E83CC corresponding to the "big three" of dual triodes we all know
> and love.
>
> Enquiring minds want to know...
>
> Fred
>
--
* remove NOSPAM to email me! *
Mikkel C. Simonsen
>
> Gregg wrote:
> > ECC88
> >
> > E88CC would be a total different animal if the type existed ;-)
> >
> > --
> > Gregg
>
> Actually, the type does exist.
> http://frank.nostalgiaair.org/sheets/030/e/E88CC.pdf or
> http://www.jj-electronic.sk/tube_e88cc.htm .
>
> But that brings up a question I've wondered about re: European
> numbering; ECC88 means 6v (E), dual triode (CC) "type" 88. Why do some
> manufacturers call it E88CC, and what are the "objective" differences?
It's not that some manufacturers chose to call it E88CC - most
manufacturers made both ECC88 and E88CC. The difference is that the
E88CC is the "industrial" version of the ECC88. According to the Valvo
databook the industrial version is special in the following ways: Lange
Lebensdauer (long life) - Zuverlässigkeit (reliability) - Enge
Toleranzen (tight tolerances) - Stoss- und Vibrationsfestigkeit
(vibrationproof) - Zwischenschichtfreie Spezialkatoden (haven't got a
clue - but it involves cathodes ;-).
Some types were avalable in both versions, like ECC82/E82CC,
ECC83/E83CC, but it doesn't look like there's an E81CC. The E80CC is an
industrial/special quality double triode, but I have never seen an
ECC80. But if you find an unknown (to you) E8x?? tube always chack the
data - don't just assume it's the same as an E??8x - there may be cases
where the two types are not the same.
Telefunken, BTW, used different numbers for their special quality tubes.
They used ECC802 and ECC803 instead of E82CC and E88CC. But be carefull
if you find ECC808 tubes. They are actually a lownoise ECC83 with a 6.3V
only heater...
Best regards,
Mikkel C. Simonsen
Pär
The european system is
E-6.3V parallell
C-Low power Triode (CC is dual)
first 8 is noval socket
second is a type serial number.
When tubes are of special quality / industrial quality they basically
used the same system, but the numbers was moved.
So a ECC88 became a E88CC, a ECC82 became a E82CC (philips) ECC802 or
ECC802S (telefunken). [Later east german did add a 6(? or was it 5) in
the number, like ECC862 (or was it ECC826/ECC825/ECC852?), but I don't
know if such an animal ever existed.]
Anyhow: A ECC88 is basically a 6DJ8 though heater to cathode isolation
voltage is sometimes a little different. A 6922 is a E88CC.
Further info on this may be found on franks page under "numbering
system" - or at < http://www.nrhf.no/nrhf-rorbetegnelser.html> if you
understand norwegian, where the american system stands out from the
european and russian for not being much "systematic". But english as
well as old european sustems did also lack this "systematic" property.
mvh /Pär
Jorge Santos
And i can add that the only one that have a diferent heater current is the
E188CC with 335mA .
Then we have:
-ECC88-E88CC-6DJ8-6922- 6,3Volts 300mA
-E188CC-6;3 Volts-335mA.
In my Philips 1967pocket book the E88CC and tha E188CC are descrived as
reliable,ruggedized and long life tubes.(premium tubes)
Regards
Jorge Santos
"Zvonimir Ervacic" <NOSPAMzvoni...@zg.hinet.hr> wrote in message
news:MPG.17f3b8fbc...@news.tel.hr...
Fred Nachbaur
Mikkel C. Simonsen wrote:
> Fred Nachbaur wrote:
>
>>Gregg wrote:
>>
>>>ECC88
>>>
>>>E88CC would be a total different animal if the type existed ;-)
>>>
>>>--
>>>Gregg
>>
>>Actually, the type does exist.
>>http://frank.nostalgiaair.org/sheets/030/e/E88CC.pdf or
>>http://www.jj-electronic.sk/tube_e88cc.htm .
>>
>>But that brings up a question I've wondered about re: European
>>numbering; ECC88 means 6v (E), dual triode (CC) "type" 88. Why do some
>>manufacturers call it E88CC, and what are the "objective" differences?
>
>
> It's not that some manufacturers chose to call it E88CC - most
> manufacturers made both ECC88 and E88CC. The difference is that the
> E88CC is the "industrial" version of the ECC88. According to the Valvo
> databook the industrial version is special in the following ways: Lange
> Lebensdauer (long life) - Zuverlässigkeit (reliability) - Enge
> Toleranzen (tight tolerances) - Stoss- und Vibrationsfestigkeit
> (vibrationproof) - Zwischenschichtfreie Spezialkatoden (haven't got a
> clue - but it involves cathodes ;-).
"Special cathodes without an intermediate layer." Whatever an
intermediate layer is...
> Some types were avalable in both versions, like ECC82/E82CC,
> ECC83/E83CC, but it doesn't look like there's an E81CC.
TDSL-PE lists it, but all the datasheet links point to the other
versions (ECC81, 12AT7 etc.)
> The E80CC is an
> industrial/special quality double triode, but I have never seen an
> ECC80. But if you find an unknown (to you) E8x?? tube always chack the
> data - don't just assume it's the same as an E??8x - there may be cases
> where the two types are not the same.
>
> Telefunken, BTW, used different numbers for their special quality tubes.
> They used ECC802 and ECC803 instead of E82CC and E88CC. But be carefull
> if you find ECC808 tubes. They are actually a lownoise ECC83 with a 6.3V
> only heater...
>
> Best regards,
>
> Mikkel C. Simonsen
Interesting little minefield. Thanks for the warning about being careful
to avoid assumptions!
Cheers,
Ross Matheson
NOSPAMzvoni...@zg.hinet.hr (Zvonimir Ervacic) wrote:
: Hi Fred,
:
: According to Philips databook:
:
: ECC88 (6DJ8):
: RF double triode intended for use as cascode amplifier in tuners for TV
: receivers.
: E88CC (6922):
: Special quality double triode designed for cascode circuits, HF or IF
: amplifiers, mixer or phase inverter stages, multivibrator and cathode
: follower in computers.
Heater Current If 300mA
Mutual Conductance S 12.5ma/V
Equiv noise resistance Req 300 ohm
Noise factor (f=200MHz) F 4.6 db
: E188CC (7308):
: Special quality double triode designed for use as cascode amplifier,
: cathode follower etc. in RF and AF circuits.
Heater Current If 335mA
Mutual Conductance S 12.5ma/V
Equiv noise resistance Req 250 ohm
Noise factor (f=200MHz) F 4.6 db
Hum voltage Vg max 50ÁVRMS
: I believe all datas are same for all 3 tubes except heating current.
: Microphonic and hum resistance culd be different too.
Yes, as seen -
These were from the quick reference table - I haven't pored over detail.
There's ALSO :-)
E288CC
Special quality double triode designed for use in cascode circuits and as
R.F or I.F. amplifier
Heater Current If 475mA
Mutual Conductance S 20ma/V
Equiv noise resistance Req 200 ohm
Noise figure F 5.7 db
(in cascode circuit adapted to minimum noise)
(Req for all of 3 these is at 45MHz)
Actually, just looking at the detail for the last two, there are
differences in capacitances, and max Ik and Wa are almost double.
Quite a different valve. Á is 25 instead of 33 for the other too as well.
We obviously can't assume the "2" = "extra special equiv" over "1"
Just an extra piece of trivia ...
: Best,
: Erv
:
: fnac...@netscape.net says...
: > But that brings up a question I've wondered about re: European
: > numbering; ECC88 means 6v (E), dual triode (CC) "type" 88. Why do some
: > manufacturers call it E88CC, and what are the "objective" differences?
: > TDSL/PE lists these two as "identical or close" or "different ratings/
: > performance" vis-a-vis 6922 and 6DJ8. Similarly, there are E81CC, E82CC
: > and E83CC corresponding to the "big three" of dual triodes we all know
: > and love.
: >
: > Enquiring minds want to know...
: >
: > Fred
I see there's also a 12AX7S.
Talking about "big" ... there's also an E236L ...a S.Q. EL36? :-)
Regards,
Ross
Ronald Pit
(Just compare both sections)
"Boinkster" <lord...@hotmail.com> schreef in bericht
news:ea628c7b.02091...@posting.google.com...
Boinkster
E88CCs so I'll give them a try...
Boink
Oscillatus
news:Ulni9.84878$H6.70...@zwoll1.home.nl:
> If you all know the data so well , you still want to use it for audio ??
> (Just compare both sections)
What do you mean?
Oscillatus
news:ambsol$qd4$1...@reader12.wxs.nl:
> The (American)
> industrial 6922 type is equivalent to the E88CC.
>
Equivalent, but not equal in each case. For example, the Telefunken
E88CC's (that I sold for big $ on ebay) were lovely gold-pinned creatures,
whereas, Philips ECG 6922's are ordinary steel pinned and have more
microphony and generally don't sound as good.