LOGARITHMIC CHARACTERISTIC OF TRIODE ELECTROMETER CIRCUITS

Journal Article · Tue Dec 01 04:00:00 EST 1959 · Rev. Sci. Instr.

DOI:https://doi.org/10.1063/1.1716450· OSTI ID:4199903

Chao, S K

The triode-connected 5889 electrometer tube was found to be useful as a logarithmic element over a grid current range of 10/sup -14/ to 10/sup -6/ amp. The relationship of plate current to grid current was carefully studied over a span of three and one-half decades as a function of the plate supply potential, the plate circuit load resistance, and the filament voltage. A circuit was developed for use in an ionization chamber survey instrument. Most 5889 tubes will work in the circuit after a 150-hr aging period. Over-all accuracy of plus or minus 10% of the reading is feasible. (auth)

• Research Organization: Baird-Atomic, Inc., Cambridge, Mass.
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-005388
• OSTI ID: 4199903
• Journal Information: Rev. Sci. Instr., Journal Name: Rev. Sci. Instr. Vol. Vol: 30
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CIRCUITS
CURRENTS
ELECTRODES
ELECTROMETERS
ELECTRON TUBES
ENGINEERING AND EQUIPMENT
IONIZATION CHAMBERS
SENSITIVITY