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[[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. | |||
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]]. | |||
* [ | 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]] |