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[[File:Nuvistor 8056.jpg |thumb|350px|right|Nuvistor 8056]] The '''8056''' is a low-voltage [[Nuvistor]] triode with a 6.3 V 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 [[ | 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. | It can sometimes be replaced with a [[MPF102]] FET. | ||
The 8056 has a maximum plate-to-cathode voltage of | The 8056 has a maximum plate-to-cathode voltage of 50 V. | ||
Contrast this with another Nuvistor triode, the [[7586]], | Contrast this with another Nuvistor triode, the [[7586]], which has a maximum plate-to-cathode voltage of 110 V | ||
which has a maximum plate-to-cathode voltage of | (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== | ==Links== | ||
* [http://w140.com/8056.pdf RCA 8056 Datasheet (PDF)] | * [http://w140.com/8056.pdf RCA 8056 Datasheet (PDF)] | ||
* [http://w140.com/8056-siemens1964.pdf Siemens 8056 Datasheet (PDF)] | * [http://w140.com/8056-siemens1964.pdf Siemens 8056 Datasheet (PDF)] | ||
* [http://w140.com/RCA_Nuvistors.pdf RCA Nuvistor Reference (PDF)] | * [http://w140.com/RCA_Nuvistors.pdf RCA Nuvistor Reference (PDF)] | ||
* [ | * [[tube:8056|8056 @ radiomuseum.org]] | ||
[[Category:Triodes]] | [[Category:Triodes]] | ||
[[Category:Nuvistors]] | [[Category:Nuvistors]] |
Revision as of 00:09, 24 February 2021
The 8056 is a low-voltage Nuvistor triode with a 6.3 V heater.
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
Aged/Checked/Matched Pair Details | ||
---|---|---|
Used in | Tek Part# | S/N Range |
502, W, 3A7, 10A1 | 157-0099-00 | All |
Reference: