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    • 7. 发明授权
    • High-frequency generator with automatic power-control for high-frequency
surgery
    • 高频发生器具有自动功率控制功能,适用于高频手术
    • US4818954A
    • 1989-04-04
    • US11781
    • 1987-02-06
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • A61B18/12H03L5/02A61B17/36
    • H03L5/02A61B18/1206A61B2018/00702A61B2018/00857A61B2018/00869
    • A high-frequency generator having automatic power-control for use in high-frequency surgery. The frequency of a high-frequency generator is adjustable by electronic circuit brought by a control circuit to a value such that at the output of the power amplifier there is an optimal phase relation between output voltage and output current, i.e., generally a phase shift of zero. The signal necessary for the control of the output power is obtained from harmonic oscillations generated by the arc at the surgical probe. A harmonic-measuring device to obtain the harmonic oscillations generated by the arc at the surgical probe has a phase-controlled rectifier which is controlled by the oscillator of the high-frequency generator. A simple filter is used at the output of the power amplifier, and the measurement filter used before the harmonic-measuring device can either be completely eliminated or need only be very simple in construction. No complicated filter adjustment is necessary and the power generator operates under optimal conditions and exhibits enhanced operating reliability.
    • 具有自动功率控制功能的高频发生器,用于高频手术。 高频发生器的频率可以通过由控制电路带来的电子电路来调节,使得在功率放大器的输出处存在输出电压和输出电流之间的最佳相位关系,即通常是相位偏移 零。 用于控制输出功率所需的信号由外科手术探针上的电弧产生的谐波振荡获得。 用于获得手术探针上的电弧产生的谐波振荡的谐波测量装置具有由高频发生器的振荡器控制的相控整流器。 在功率放大器的输出端使用简​​单的滤波器,在谐波测量装置之前使用的测量滤波器可以完全消除,或者只需要非常简单的结构。 不需要复杂的滤波器调节,并且发电机在最佳条件下运行并且表现出增强的操作可靠性。
    • 8. 发明授权
    • Feedback-coupled high-frequency power oscillator
    • 反馈耦合高频功率振荡器
    • US4922210A
    • 1990-05-01
    • US381492
    • 1989-07-18
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • H03B5/08
    • H03B5/08
    • A high-frequency power oscillator is built around a power amplifier utilizing semiconductors in a complementary or quasi-complementary stage which operate in a switching mode of operation. The output of the amplifier supplies high-frequency oscillations to a load impedance through an output filter composed of a series-resonant circuit and a parallel-resonant circuit. A feedback driving voltage is obtained from the output filter in a manner providing a first portion of the driving voltage from a voltage present in the parallel-resonant circuit for voltage feedback and a second portion of the driving voltage obtained by current inverse feedback from the current in the series-resonant circuit. These two components of the driving voltage are combined in an addition circuit and supplied to an input of the power amplifier through a pulse modification stage. In the case of high load impedances the operating frequency is as close as possible to the resonant frequency of the parallel resonant circuit and the superimposed current inverse feedback prevents the provision of an operating frequency that would approach the resonant frequency of the series-resonant circuit even when the losses in the series-resonant circuit are small. The ability to use a low-loss series-resonant circuit makes possible increased operation reliability, safety and efficiency.
    • 在功率放大器周围构建高频功率振荡器,利用在开关操作模式下工作的互补或准互补级的半导体。 放大器的输出通过由串联谐振电路和并联谐振电路组成的输出滤波器将高频振荡提供给负载阻抗。 从输出滤波器以从存在于并联谐振电路中的电压提供驱动电压的第一部分用于电压反馈的方式从输出滤波器获得反馈驱动电压,以及通过来自电流的电流反向反馈获得的驱动电压的第二部分 在串联谐振电路中。 驱动电压的这两个分量在加法电路中组合并通过脉冲修改级提供给功率放大器的输入端。 在高负载阻抗的情况下,工作频率尽可能接近并联谐振电路的谐振频率,并且叠加的电流反向反馈防止提供即将接近串联谐振电路的谐振频率的工作频率 当串联谐振电路的损耗小时。 使用低损耗串联谐振电路的能力可以提高操作的可靠性,安全性和效率。
    • 10. 发明授权
    • Self oscillating power stage for inverted rectifier power supply
    • 用于逆变整流器电源的自振荡电源
    • US5062031A
    • 1991-10-29
    • US450855
    • 1989-12-14
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • Gerhard FlacheneckerKarl FastenmeierHeinz Lindenmeier
    • H02M3/155H02M3/10H02M3/28
    • H02M3/10
    • A self-oscillating inverted rectifier has a series-resonant circuit connected between a load and the selector terminal of an electronically controllable switch, the other terminals of which are connected respectively to d.c. sources of different potential. Phase detection and feedback circuits provide a rectangular control wave for connecting and disconnecting the resonant circuit to each d.c. source only at null transits of the current in the resonant circuit. The feedback circuit includes a control circuit supplied with a regulation voltage, which may be derived from the load, whereby the switch is intermittently prevented from connecting the resonant circuit to energizing d.c. for an integral number of half cycles of the resonant frequency. The load may be a high-frequency electrosurgical device or, more generally, a rectifier circuit providing accurately regulated d.c. power to a variable load.
    • 自振荡反相整流器具有连接在负载和电子可控开关的选择器端子之间的串联谐振电路,其另一端分别连接到直流电。 不同潜力的来源 相位检测和反馈电路提供矩形控制波,用于将谐振电路连接和断开至每个直流。 仅在谐振电路中的电流的零转换时才产生。 反馈电路包括一个控制电路,该控制电路被提供有可从负载导出的调节电压,由此间歇地防止开关将谐振电路连接到通电直流。 对于谐振频率的半个周期的整数。 负载可以是高频电外科装置,或更一般地,提供精确调节的直流电的整流电路。 功率到可变负载。