抄録
To obtain long continuous data of temperature characteristics of a standard self-inductor, anautomatic balance bridge with a recorder (Fig. 6) was constructed. Two components are drawn from the unbalance voltage of a transformer bridge, one corresponding to the unbalance of inductance and the resistance. The former controls a motor connected to a small variable inductor while the latt er another motor connected to a variable resister of potentio type. Obtained results (Fig.8) were satisfactory for inductor 1 mH-1 H. Many standard self-inductors were measured and temperature-coefficients (Table 3) of 10°C-30°C were obtained.
