| 摘要 |
PURPOSE:To attain the miniaturization and wt. reduction of the titled apparatus as a whole by making it possible to reduce not only the number of transformers to be used but also the wt. thereof, by using an oscillator generating high frequency voltage of commercial frequency or more. CONSTITUTION:Voltage of several volts with frequency of 500Hz oscillated by an oscillator OS is amplified, for example, to power of 30kV and several 100W- several kW and said power is outputted from an output transformer T6 to be applied to a demodulator DE. The transformer T6 also substantially has function as the control transformer of the demodulator DE and is also used as said transformer to attain to reduce the number of transformers to be used. Voltage of several volts obtained, for example, by modulating voltage of 0.1Hz in an equilibrium modulator MO is amplified, for example, to power of 30kV and several 100W- several kW to be sent to the demodulator DE and it is achieved that modulation is electronized and the voltage and power of a modulated wave are enhanced. By using a single transformer T8 as an output transformer of Amp 2 and a boosting transformer, the reduction in the number of transformers to be used is attained.
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