skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Voltage controlled current source

Abstract

A seven decade, voltage controlled current source is described for use in testing intermediate range nuclear instruments that covers the entire test current range of from 10 picoamperes to 100 microamperes. High accuracy is obtained throughout the entire seven decades of output current with circuitry that includes a coordinated switching scheme responsive to the input signal from a hybrid computer to control the input voltage to an antilog amplifier, and to selectively connect a resistance to the antilog amplifier output to provide a continuous output current source as a function of a preset range of input voltage. An operator controlled switch provides current adjustment for operation in either a real-time simulation test mode or a time response test mode.

Inventors:
 [1]
  1. Pittsburgh, PA
Issue Date:
OSTI Identifier:
868196
Patent Number(s):
5097199
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
voltage; controlled; current; source; seven; decade; described; testing; intermediate; range; nuclear; instruments; covers; entire; 10; picoamperes; 100; microamperes; accuracy; obtained; throughout; decades; output; circuitry; coordinated; switching; scheme; responsive; input; signal; hybrid; computer; control; antilog; amplifier; selectively; connect; resistance; provide; continuous; function; preset; operator; switch; provides; adjustment; operation; real-time; simulation; mode; time; response; input voltage; output current; input signal; current source; amplifier output; voltage controlled; provides current; voltage control; operator control; intermediate range; range nuclear; controlled current; time response; selectively connect; nuclear instrument; /323/

Citation Formats

Casne, Gregory M. Voltage controlled current source. United States: N. p., 1992. Web.
Casne, Gregory M. Voltage controlled current source. United States.
Casne, Gregory M. Wed . "Voltage controlled current source". United States. https://www.osti.gov/servlets/purl/868196.
@article{osti_868196,
title = {Voltage controlled current source},
author = {Casne, Gregory M},
abstractNote = {A seven decade, voltage controlled current source is described for use in testing intermediate range nuclear instruments that covers the entire test current range of from 10 picoamperes to 100 microamperes. High accuracy is obtained throughout the entire seven decades of output current with circuitry that includes a coordinated switching scheme responsive to the input signal from a hybrid computer to control the input voltage to an antilog amplifier, and to selectively connect a resistance to the antilog amplifier output to provide a continuous output current source as a function of a preset range of input voltage. An operator controlled switch provides current adjustment for operation in either a real-time simulation test mode or a time response test mode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

Save / Share: