[Amps] toroid filament choke?

[k7fm]

Will said:

"It takes up to one minute + for the heater to reach operating temperature.
A cold heater is only a few ohms, and that's a lot of current."

Although it will take up to 3 minutes for the cathode to come up to
operating temperature, the heavy current draw only lasts a moment.  Do not
confuse the two events.  Heavy current draw is for less than a second, and I
believe normal current draw is within 2 seconds.

Colin  K7FM


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