Voltage controlled current source

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868196

Casne, Gregory M ^[1]

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1. Pittsburgh, PA

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.

• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5097199
• OSTI ID: 868196
• Country of Publication: United States
• Language: English

Related Subjects

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
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