PROBLEM TO BE SOLVED: To provide an ultrasonographic apparatus with a wave transmission circuit for varying the amplitude of output signals.SOLUTION: The ultrasonographic apparatus has at least a DC power source provided on the input winding side of a pulse transformer and the wave transmission circuit which picks up a high-frequency signal generated in the input winding with a switching circuit from the output winding side of the pulse transformer to be supplied to an oscillator of an ultrasonic probe. A current control circuit is provided to vary a current flowing through the input winding of the pulse transformer.COPYRIGHT: (C)2007,JPO&INPIT【課題】出力信号の振幅を可変し得る送波回路を備える超音波診断装置の提供。【解決手段】パルストランスの入力巻線側に備えられる少なくとも直流電源とスイッチング回路によって該入力巻線に発生する高周波信号を前記パルストランスの出力巻線側から取り出し超音波探触子の振動子に供給する送波回路を備える超音波診断装置であって、前記パルストランスの入力巻線に流れる電流を可変する電流制御回路を備える。【選択図】図1
