Data set 01
1947 Westinghouse
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Application
Application
ComputerStorage_SignalConversion text
Specialized - Cathode Ray ·CathodeRay
7225
Three-inch barrier-grid storage tube with electrostatic focusing and deflection, designed for computer and signal-conversion applications where electronically written information must be retained and subsequently used.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
Three-inch barrier-grid storage tube with electrostatic focus and deflection for computer and signal-conversion applications.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Cathode Ray
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Barrier-grid storage electron-beam system.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.