Data set 01
195X Tesla
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristics
Heater or filament voltage
1.2 V
Published nominal value
Heater or filament current
29 mA
Published nominal value
Voltage Tetrode ·Tetrode
2NE9
Directly heated oxide-cathode electrometer tetrode intended for precision measuring applications requiring extremely small currents and sensitive DC signal amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 1.2 V / 29 mA
Description
Directly heated electrometer tetrode with oxide cathode, intended for precision measuring 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
- 1.2 V
- Nominal heater current
- 29 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
Tetrode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 10 V
Tesla 2NE9 directly heated oxide-cathode electrometric tetrode for precision low-current measurements, filament nominal 1.2 V, 29 mA. Original 1959 Tesla datasheet specifies maximum plate voltage 10 V (corrected from 12 V), filament voltage operating range 1.1–1.3 V, and a special top-exit control-grid connection for increased insulation resistance. Envelope coated with silicone to reduce surface leakage; handle only with clean gloves. Typical/characteristic anode and grid values are not unrestricted maximums. Modified S7/10 wire-base arrangement reported.
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.