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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 | which has a maximum plate-to-cathode voltage of 110 V. | ||
The 7586 and 8056 have the same pinout, | The 7586 and 8056 have the same pinout, | ||
but the two tubes are not interchangable | but the two tubes are not interchangable | ||
since they have different voltage ratings. | since they have different voltage ratings. | ||
For example, in the front-end cathode followers | For example, in the front-end cathode followers | ||
of the [[3A1]], the plate voltage of the 7586 tubes, V113 and V123, is | of the [[3A1]], the plate voltage of the 7586 tubes, V113 and V123, is 55 V, | ||
and possibly a bit higher during warm-up. | and possibly a bit higher during warm-up. | ||
This exceeds the maximum plate voltage of the 8056, | This exceeds the maximum plate voltage of the 8056, | ||
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* [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)] | ||
* [https://www.radiomuseum.org/tubes/tube_8056.html 8056 | * [https://www.radiomuseum.org/tubes/tube_8056.html 8056 @ radiomuseum.org] | ||
[[Category:Triodes]] | [[Category:Triodes]] | ||
[[Category:Nuvistors]] | [[Category:Nuvistors]] | ||