Using the RCA 7586 Nuvistor electron tube. A usual value of Pleiades bias resistor for EF183 or 7586 is 6MΩ, Cc to grid is usually 22nF.
The current consumption is 100mA for heaters and 25μA for anode.
The voltage supply is 3.9V.
So power consumption is 3.9V x 100mA = 390mW
Pleiades schematics or concepts are open source.
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