A supply

noun

, Electronics.

1. a battery or other source of power for heating the filament or cathode heater of an electron tube.

Example Sentences

Another interpretation is that Native American tribes would set beaver traps before the swamps froze, ensuring a supply of warm winter furs.

From BBC

Another interpretation is that Native American tribes would set beaver traps before the swamps froze, ensuring a supply of warm winter furs.

From BBC

Cruz, who spun up election deniers with his amplification of Trump’s lies, hid in a supply closet.

From Los Angeles Times

The federal government is aiming to create a supply of 3 billion gallons by 2030, which most industry observers consider an aggressive target.

From Los Angeles Times

"At the same time, after he’d gone around the country lying about the election, after he’d been the architect of the attempt to overthrow an election, when that mob came, Senator Cruz was hiding in a supply closet."

From Salon