Power Triode

The 810 is a three-electrode high-mu tube with a typical power output of 575 watts (ICAS) for Class C telegraph service. Because of its high perveance the tube can be operated at high plate efficiency with low driving power and relatively low plate voltage. The heavy duty filament, shielded at each end, conserves input power by eliminating bulb bombardment and stray electrons. The plate and grid leads are brought out to terminals at the top and side of the bulb, respectively - a design which provides very short internal leads, low internal lead inductance, and permits compact high-frequency circuits. Maximum ratings apply up to 30 megacycles.

Audio power triode, used in radio transmitters.