Specialized - Cathode Ray ·CathodeRay
Cathode-ray display tube documented by manufacturer data for type 12BGP4; available extracted source information is sparse, so no more specialized application or construction claim is made.
The 12BGP4 is a direct-view cathode-ray television picture tube. The supplied sheet specifies its focus/deflection system, high-voltage anode operation, heater requirements, electrode ratings, and picture-tube mechanical/optical characteristics.
Neoeightar 8-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
CRT anode/ultor voltage is represented in MaxPlateVoltage; additional electrode, drive, optical, and capacitance data retained as parameters.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Minimum anode voltage
8000 V
Maximum anode voltage
15000 V
Minimum anode voltage
8000 V
Typical anode voltage
12000 V
Typical grid No. 2 voltage
50 V
Maximum heater voltage
6.9 V
Minimum heater voltage
5.8 V
Heater warm-up time
11 s
Cathode to other electrodes capacitance
5 pF