Other (weirdo tubes) ·Other
CH1027-family Curpistor constant-current regulator for precision low-current service, providing a defined current largely independent of applied voltage.
Two-electrode radioactive nitrogen-filled Curpistor constant-current tube rated at 10^-12 A with a 25–500 V current plateau.
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
No fixed ratings are recorded for this section.
Two-electrode nitrogen-filled constant-current regulator; no dedicated canonical current-regulator SectionType.
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.
Current rating
0.000000001 mA
Maximum current variation from center value
2 %
25-500V plateau
Plateau voltage minimum
25 V
Plateau voltage maximum
500 V
Radium-226 activity
0.01875 microcurie
Ambient temperature minimum
-70 degC
Ambient temperature maximum
80 degC
Data set 02
Published operating points and test conditions from this source.
Constant current rating
0.000000001 mA
CenterValue
Current plateau voltage minimum
25 V
CurrentPlateau
Current plateau voltage maximum
500 V
CurrentPlateau
Maximum current variation from center value
2 %
25To500VPlateau
Radioactive activity
0.01875 uCi
Life
Unlimited
Radium226HalfLife1620Years
Radium-226 half life
1620 years
Gas fill
Nitrogen
Active material
Radium-226
Radioactive
Base/construction
DoubleEnded
Ambient temperature minimum
-70 degC
Ambient temperature maximum
80 degC
Mounting position
Any
Typical application
Constant capacitor drain or charge
MissileAndOrdnanceTiming
Typical application
Instrument bias
Typical application
Ionization chamber testing
Typical application
Calibration standard