The E2657 is an M-OV experimental valve and has a serial number of 20 The construction suggests a low power EHT rectifier. The anode connects to the top cap.Testing our other E2657 reveals a 6.3 Volt heater.![](../pics/abh0007a.jpg)
The white band shields the gap between cathode screen and the anode.The thin glass tube envelope is 21 mm in diameter, and excluding the base pins is 63 mm tall.Reference: Observation. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | tc | ![](../static/key.gif) k | h | nc | k | h | k | nc | h | h,k | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | ![](../static/key.gif)
| 6.3 | 0.12 |
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Updated January 06, 2022.
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