8056: Difference between revisions

8056 (view source)

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-The 8056 is a low-voltage [[Nuvistor]] triode with a 6.3V heater.
+[[File:Nuvistor 8056.jpg |thumb|350px|right|Nuvistor 8056]] The '''8056''' is a low-voltage [[Nuvistor]] triode with a 6.3 V heater.
-It is used in the [[10A1]] and the [[422]].
+It is used in the [[422]], [[502]], early [[W]], [[1S1]], [[3A7]], early [[3S3]], [[3T4]], [[5T3]], and [[10A1]].
+It can sometimes be replaced with a [[MPF102]] FET.
+The 8056 has a maximum plate-to-cathode voltage of 50 V.
+Contrast this with another Nuvistor triode, the [[7586]], which has a maximum plate-to-cathode voltage of 110 V
+(however, one of the 8056 test conditions for 157-0099-00 puts 100 V on the plate.)
+The 7586 and 8056 have the same pinout, but the two tubes are not interchangeable since they have different voltage ratings.
+For example, in the front-end cathode followers of the [[3A1]], the plate voltage of the 7586 tubes,
+V113 and V123, is 55 V, and possibly a bit higher during warm-up.
+This exceeds the maximum plate voltage of the 8056, unless the 3A1 is modified for lower front-end plate voltages.
+Tek part number: 154-0417-00
+{| class="wikitable"
+{{Checkedtubes TableHeader}}
+|-
+|  [[502]], [[W]], [[3A7]], [[10A1]] || 157-0099-00   || All
+|}
+{{Tube aging reference}}
+==Links==
 * [http://w140.com/8056.pdf RCA 8056 Datasheet (PDF)]
 * [http://w140.com/8056-siemens1964.pdf Siemens 8056 Datasheet (PDF)]
 * [http://w140.com/RCA_Nuvistors.pdf RCA Nuvistor Reference (PDF)]
+* [[tube:8056|8056 @ radiomuseum.org]]
 [[Category:Triodes]]
 [[Category:Nuvistors]]

8056: Difference between revisions

8056 (view source)

Revision as of 00:09, 24 February 2021

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