| 摘要 |
PURPOSE: To provide a circuit device for AC signal current supply with which a parasitic inductance on an output current passage does not exert any adverse influence upon the amplitude value of AC signal current. CONSTITUTION: Concerning the circuit device for AC signal current supply provided with an output current passage 1 coupling its one end to a reference potential point 4, in order to compensate the influence of parasitic inductance 5 in coupling between the output current passage and the reference potential point 4, a 1st node 7 between the output current passage and the parasitic inductance is provided with compensation circuits 2, 9, 12, 13, 17, 19 and 21 for supplying a phase inverted AC compensating current at the almost equal level with an AC signal current at least. |
