| 摘要 |
<p>PURPOSE:To attain ease of operation by providing an additional winding to each of plural current detectors and connecting them in series, and flowing a current superimposed with DC and AC as required to the additional windings connected in series so as to apply electroding through the adjustment of a variable resistor and switch operation. CONSTITUTION:A DC constant current device is provided with plural constant current converters CONV1-CONVn connected in series, and a DC constant current is fed to a coaxial cable 1 via current detectors 3'-5'. The detectors 3'- 5' are provided with the additional windings Nd, which are connected in series and an additional circuit 15 is connected to the additional winding Nd connected in series. The circuit 15 consists of a DC power supply Es, a variable resistor Rv, resistors R3, R4, an AC power supply 16, a capacitor C2 and a switch SW. The current supervised with the DC and AC flows only with the adjustment of the switch SW of the circuit 15 and the resistor Rv so as to apply electroding.</p> |
