RESISTOR, ITS TRIMMING METHOD, AND POWER SUPPLY

摘要

PROBLEM TO BE SOLVED: To provide a resistor that can use arbitrary resistor materials for the trimming resistor and precisely adjust the resistance without making the circuit large and also can make re-adjustment of the resistance. SOLUTION: This resistor is made up with the main resistors RM1, RM2, a trimming resistor RT1, an analog switch S1 to change the connection of the trimming resistor RT1, and a switching means 7 to change the switching of the analog switch S1. The switching means 7 includes a first resistor RS1 series connected to the power source and a second resistor RS2 connected to the ground. This resistor is composed so that the voltage signal divided by the first resistor RS1 and the second resistor RS2 changes and the switching of the analog switch S1 can be changed by breaking either one of the first resistor RS1 or the second resistor RS2. COPYRIGHT: (C)2004,JPO