Philips Ideezet Type B
DC Det/Amp Triode
1919 (Neth)

The Philips Ideezet was the first Philips tube, made in 1918. The element design was similar to the original DeForest audion. The Ideezet Type B had a redesigned filament which ran at 2 volts and .5 amps. This tube is marked Philips Ideezet on the bulb.