Description
3-500Z is a compact power triode intended to be used as a zero-bias Class-B amplifiers in audio or RF applications. Operation with zero grid bias simplifies associated circuitry by eliminating the bias supply. In additional, grounded-grid operation is attractive since a power gain as high as twenty times can be obtained with 3-500Z in a cathode-driven circuit. https://frank.pocnet.net/sheets/088/3/3-500Z.pdf