LOGARITHMIC/ANTI-LOGARITHMIC CONVERTER CIRCUIT

PROBLEM TO BE SOLVED: To provide a logarithmic/anti-logarithmic converter circuit in which an output signal obtained when performing anti-logarithmic conversion can retain linearity without executing a temperature correction.SOLUTION: The logarithmic/anti-logarithmic converter circuit is so configur...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	NAKAI TOSHIMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BASIC ELECTRONIC CIRCUITRY ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a logarithmic/anti-logarithmic converter circuit in which an output signal obtained when performing anti-logarithmic conversion can retain linearity without executing a temperature correction.SOLUTION: The logarithmic/anti-logarithmic converter circuit is so configured that a current signal Iin passing through a current feedback transistor TR 2 of a logarithmic conversion circuit 1 is input in an anti-logarithmic converter circuit 2, a current/voltage converter circuit 3 convers the current signal Iin into a voltage value corresponding thereto, and a subtraction circuit 4 outputs a difference between the output voltage of the current/voltage converter circuit 3 and a preset reference voltage. The subtraction circuit 4 is configured to set a circuit constant such that the difference output has the linearity proportional to the current signal Iin.