12B4: Difference between revisions

737 bytes added ,  14 September 2023
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The 12B4 is a triode with 5.5 W maximum plate dissipation,
[[File:Tek-585-psu-2.jpg|thumb|350px|right|parallel 12B4s (center left) as pass elements in [[585]] power supply]]
1000 V peak plate voltage, and and 105 mA peak cathode current.
{{Vacuum Tube
|Type=Triode
|Number=12B4(A)
|EuroNumber=
|RussianNumber=
|Part_nos=154-044, 154-0044-00
|Description=power triode
|Used_in=126;310;310A;316;317;502;502A;524;526;541;541A;535;535A;545;545A;546;547;570;549;551;555;513;581;581A;585;585A;
|Designers=
}} with a {{B9A base}}.  It has 5.5 W maximum plate dissipation, 1000 V peak plate voltage, and and 105 mA peak cathode current.


It is used in the [[551]] and [[555]].
The 12B4 is used in the [[126]], [[551]], and [[555]], and as a pass tube in the power supply of the [[513]], [[581]]/[[585]], and [[570]].
It is used as a pass tube in the power supply of the [[513]].


* [http://w140.com/12B4A.pdf 12B4A Datasheet (PDF)]
The 12B4A (154-0044-00) is similar except for the controlled heater warm-up, suitable for use in conjunction with other 600 mA types.
 
==Data==
* [[Media:GE 12B4A data sheet.pdf|General Electric 12B4A data sheet]]
* [[tube:12b4|12B4]] / [[tube:12b4a|12B4A]] @ radiomuseum.org
 
==Pictures==
<gallery>
Tube 12B4.jpg | 12B4 Tube
</gallery>
 
==Used in==
{{Part usage}}




[[Category:Triodes]]
[[Category:Triodes]]