Hi,
It's only impressive if interpreted the wrong way: Vk/f 200V means with a heater 100VDC positive with respect to cathode, total DC and peak would be 200V.
With the heater negative with respect to the cathode total DC and peak is again 200V.
A lot of people misread this kind of data completely when the numbers are reversed, i.e. cathode more positive than heater and take the wrong measures.
Cheers,
That 200 Volt figure is impressive if true, but I believe that I will take Eli"s advise and bias the heaters to 70Volts just to be safe.
It's only impressive if interpreted the wrong way: Vk/f 200V means with a heater 100VDC positive with respect to cathode, total DC and peak would be 200V.
With the heater negative with respect to the cathode total DC and peak is again 200V.
A lot of people misread this kind of data completely when the numbers are reversed, i.e. cathode more positive than heater and take the wrong measures.
Cheers,
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