Sensor/source electrometer circuit

Patent Application · Tue Dec 31 00:00:00 EST 1991

OSTI ID:10168204

Hughes, W J

A multiple decade electrometer circuit is claimed which can measure low input currents or act as a current source and is comprised of a microprocessor controlled digital to analog converters to derive individual decades. A plurality of decades are created by multiple D-A voltage sources which generate electrometer currents through scaled resistors. After a first series of decades of current are successively produced, the converters are 10 cycled to generate current through new resistors scaled to produce another series decades of current. In this manner, the electrometer circuit generates or senses a plurality of decades of current without significant scale change.

• Research Organization: Knolls Atomic Power Lab., Schenectady, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC12-76SN00052
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7723120
• Application Number: ON: DE93015717; PAN: 7-723,120
• OSTI ID: 10168204
• Resource Relation: Other Information: PBD: 1991
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
42 ENGINEERING
ELECTROMETERS
ELECTRONIC CIRCUITS
DESIGN
INVENTIONS
MICROPROCESSORS
DIGITAL-TO-ANALOG CONVERTERS
440800
426000
MISCELLANEOUS INSTRUMENTATION
COMPONENTS
ELECTRON DEVICES AND CIRCUITS