| 摘要 |
PROBLEM TO BE SOLVED: To provide an AC constant current source and bioelectric impedance measurement device capable of lowering the voltage of a power source by suppressing the voltage amplitude of the AC constant current source when supplying a current to an electrically floating measurement object.SOLUTION: The AC constant current source includes an AC constant voltage source 11, an arithmetic amplifier 12, and a partial pressure circuit 13. The output of the AC constant voltage source 11 is connected to a current supply electrode E1. The inverting input of the arithmetic amplifier 12 is connected to the current supply electrode E1, and the output of the arithmetic amplifier is connected to a current supply electrode E2. The partial pressure circuit 13 outputs a voltage that is obtained by dividing an output voltage V10 from the AC constant voltage source 11 to the non-inverting input of the arithmetic amplifier 12. |
