Virtual Valve Museum |
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This is an archive website. It will not receive any updates, additions or corrections. |
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| STC 19H5 (CV490) halfwave rectifier, 4V/4A heater, 18kV/180mA rating. |  |
| The structure of this is four separate anodes connected in parallel, with a single filament running through each, connected together at each end. |  |