| 摘要 |
PURPOSE:To supply a considerably large electrid power that an electronic circuit is unable to do, by connecting two iron resonance type constant voltage transformers in cascade. CONSTITUTION:Iron resonance type constant voltage transformers are normally used with a load current value (e.g. point A) which does not surpass a rated current value C, but using them in an overload current region results in that voltage decadency characteristics are obtained at points B, B' and B''. In this area, even when load impedance 5 varies, a current flowing through it has constant current characteristics. Variation in the input voltage of an AC power source 10 is stabilized while controlled by the 1st iron resonance constant voltage transformer 7, and the resulting voltage is applied to the 2nd iron resonance type constant transformer 8, so the 2nd transformer 8 is not influenced by the variation in the input voltage to operate invariably as a constant current power source. |
