CURRENT DETECTING CIRCUIT

PROBLEM TO BE SOLVED: To detect current with high precision in small-scale circuit when current is detected indirectly using a current mirror circuit. SOLUTION: In the current detecting circuit, a current mirror circuit CM2 for current detection includes an output current-side transistor Q6 supplyin...

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Bibliographische Detailangaben
1. Verfasser:	FUJII MICHIO
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To detect current with high precision in small-scale circuit when current is detected indirectly using a current mirror circuit. SOLUTION: In the current detecting circuit, a current mirror circuit CM2 for current detection includes an output current-side transistor Q6 supplying the output current and a transistor Q4 for current detection supplying the detecting current proportional to the output current. The current mirror circuit CM6 for compensation is connected with a current supply side of the current mirror circuit CM2 for current detection, so as to equal a collector voltage of the output current-side transistor Q6 to a collector voltage of the transistor Q4 for current detection. A current detecting section 20 can detect the current for detecting and finally detect the output current indirectly. COPYRIGHT: (C)2006,JPO&NCIPI