Tube-number record

D7-190

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ClassInstrument cathode-ray tube

Base14-pin all-glass

Filament6.3 V @ 300 mA

Construction

Primary Type

Display / CRT

Envelope7 cm diameter flat faced

Base MaterialGlass

SectionsSingle

Heater NotesIndirect by AC or DC; parallel supply

Plate Voltage2200 V

Grid 2 Voltage2200 V

Grid 1 Voltage-200 V

H-C Voltage125 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Standard	1000 V	—	—	—	0.01 mA

Primarily intended for use in inexpensive oscilloscopes and monitoring devices.

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