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CV1057Sensibly equivalent¶ to:
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The CV1057 is an octode frequency changer or mixer. The old service name was the VR57 and the prototype was the EK32 from Mullard.The KB/D identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the D identifies the maker as Mullard Radio Valve Co., Mitcham.
The reverse is plain zinc screening paint.The classic envelope is 30 mm in diameter and, excluding the IO base pins, is 85 mm tall.Reference: Data-sheet. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc |  m | h | a | g3,g5 | g1 | g2 | h | k | g4 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | 
| 6.3 | 0.2 | 250 | 50 | -2 | 1.0 | 0.8 | 2.0M | 0.55 |
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Updated October 25, 2024.
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