제어로봇시스템학회:학술대회논문집
- 1991.10b
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- Pages.1920-1923
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- 1991
Online output power measurement of full-bridged MOS-FET RF power inverter operating at shortwave frequency
- Suzuki, Taiju (Shizuoka University, Hamamatsu, Japan) ;
- Suyama, Tetsuji (Shizuoka University, Hamamatsu, Japan) ;
- Yamamoto, Tetsuya (Shizuoka University, Hamamatsu, Japan) ;
- Ikeda, Hiroaki (Shizuoka University, Hamamatsu, Japan) ;
- Yoshida, Hirofumi (Shizuoka University, Hamamatsu, Japan) ;
- Shinohara, Shigenobu (Shizuoka University, Hamamatsu, Japan)
- Published : 1991.10.01
Abstract
An online RF power measurement is needed for the full-bridged MOS-FET RF power inverter because the output current and/or voltage waveform is other than sinusoidal. In order to satisfy the requirement, the online measurement of the output power of this type of RF power inverter by the use of the PC-98 personal computer has been presented. The current and voltage waveforms are sensed by the digital oscilloscope probes so as to obtain the instantaeous power and they are entered into the PC98 personal computer so as to average the instantaneous powers. The RF power of up to 1 kw at 1 MHz measured for the power inverter at the output transformer. This method was confirmed to be applied to evaluate the load resistance change with temperature.
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