Because of the proximity effect, the high-frequency current
will flow at the inner sides of the facing pair, thus selectively heating the mold surface portion.
When a unipolar unit is used in the cutting mode, the high-frequency current
passes through the target tissue, and the active electrode functions as a bloodless knife by disintegrating the cells at the edges of the wound.
An arc causes momentary high-frequency current
spikes that ride on the low-frequency current waveform.
take the path of least inductance or the path of least loop area.
However, this can cause higher losses due to the high-frequency currents
in conductors and the load caused by the skin effect and higher eddy-currents.
Because the transformer is a large inductive element subjected to high-frequency currents
, it is typically the noisiest component.
The course will cover circuit parasitics, high-frequency currents
, signal and wave propagation, propagation time and velocity, PCB properties, transmission line impedance, impedance models, trace routing and termination, and the effects of vias and trace corners.
"The experiments showed that the problems were caused by asymmetric distribution of high-frequency currents
in the motor," Haring said.
However, Tesla was the first who succeeded, first using mechanical generators, and then oscillator coils, to produce continuous, undamped high-frequency currents
Surgical procedures can be performed by focused heating of the tissue, by using electronic devices based on the high-frequency currents
, laserbeams, argon(gas) and microwaves.