Automatic ranging circuit for a digital panel meter

Patent · Thu Jan 01 00:00:00 EST 1976

OSTI ID:862550

Mueller, Theodore R ^[1]; Ross, Harley H ^[1]

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1. Oak Ridge, TN

This invention relates to a range changing circuit that operates in conjunction with a digital panel meter of fixed sensitivity. The circuit decodes the output of the panel meter and uses that information to change the gain of an input amplifier to the panel meter in order to insure that the maximum number of significant figures is always displayed in the meter. The circuit monitors five conditions in the meter and responds to any of four combinations of these conditions by means of logic elements to carry out the function of the circuit.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3958178
• OSTI ID: 862550
• Country of Publication: United States
• Language: English

Related Subjects

automatic
ranging
circuit
digital
panel
meter
relates
range
changing
operates
conjunction
fixed
sensitivity
decodes
output
information
change
input
amplifier
insure
maximum
significant
figures
displayed
monitors
five
conditions
responds
combinations
means
logic
elements
carry
function
panel meter
logic elements
digital panel
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