The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2001
Filed:
Oct. 20, 2000
Kouichi Takagi, Nagoya, JP;
Takeshi Endoh, Nagoya, JP;
Other;
Abstract
When a circuit is activated, bases of transistors Q,and Q,making up a first current mirror circuit,are grounded through switch means,whereby a current is forcibly made to flow into the bases of the transistors Q,and Q,Thus, the circuit operation can be made reliable at the activation time. A part of load current is shunted with good accuracy via a resistor R,having a first resistance value of a predetermined magnification of a resistance value of a shunt resistor Rs, the first current mirror circuit,and a second current mirror circuit,and the output end of the shunted current is grounded via a resistor R,having a second resistance value, so that an output voltage VOUT proportional to a load current IL can be obtained with good accuracy from the resistor R,and the load current IL can be found with good accuracy from the output voltage VOUT.