| 摘要 |
PURPOSE:To measure a winding ratio simply, easily and highly accurately by connecting different polarity terminals between the primary and secondary windings and connecting an oscillator to the remaining free terminals of these windings to find the ratio of voltages on both ends of the primary and secondary windings. CONSTITUTION:When different polarity terminals, one end (a) of the primary winding N1 and one end (c) of the secondary winding N2, are connected and voltage with appropriate frequency is applied from an oscillator OSC to both terminals, i.e., (b) of the winding N1 and (d) of the winding N2, the same current flows into both the windings N1, N2. Measuring terminals ob1-ob4 of a sequence device SE are connected to both terminals of the windings N1, N2, switches S1, S2 are successively turned on and respective voltages V1, V2 are inputted to a CPU through an AD converter, so that the CPU calculates V2/V1 and finds winding ratio (n). Consequently the winding ratio (n) can be simply, easily and highly accurately measured. |
