| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reference potential stabilizer of a bioelectric signal where the operation of a reference potential stabilization circuit for making the reference potential of a human body coincident with that of an electric circuit is stabilized, and to provide an electromyograph. <P>SOLUTION: A reference potential stabilization circuit A and a switch SW1 for short-circuiting a midpoint potential Vm inputted to the reference potential stabilization circuit A to reference potential GND2 connected to the reference potential terminal ref of a differential amplifier 1. By turning on the switch SW1 to temporarily short-circuit the midpoint potential Vm and the reference potential GND2, the size of the midpoint potential Vm in view of the reference potential GND2 is kept within a corresponding potential range of the circuit A and the circuit A is driven again. <P>COPYRIGHT: (C)2004,JPO |
