Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.
DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.
The “Modulated Friction Inertial Drive (MFID) principle” is presented as a locomotion solution for mmsize micro robots dealing with both size constraints and limitations in terms of power consumption. Based on one of the configurations of this locomotion p ...
We give topological criteria for the convexity and the concavity of a current or a voltage in a resistive circuit, as a function of a source voltage or current, when the nonlinear resistor characteristics are all either convex or concave. When the criteria ...
The measurement of the transfer impedance of a screened coaxial cable using a low-power sinusoidal current has the disadvantage that the saturation effects which occur in the ferromagnetic screen are not reproduced. The authors describe a method for measur ...
Supercapacitors are components for energy storage, well dedicated for applications where energy storage can help to the smoothing of strong and short time power solicitations of a distribution network. Those properties are developed for two examples. The f ...
During the turn-on process insulated gate bipolar transistors (IGBTs) traverse a quasi-saturation region from the off.state to the on-state (saturation). The additional voltage drop due to the quasi.saturation of the junction hardly depends on the DC-link ...
The fluctuating behavior of a Sulzer Metco F4 de plasma gun has been investigated by simultaneous measurement of the:time dependencies of the are voltage and of images from the nozzle interior. An end-on imaging arrangement using a mirror and a mask in the ...
A filter-press-type Al/O2 battery with bipolar assembly of the electrodes was developed. The current-voltage curves and power output of monopolar and of bipolar batteries contg. one to four cells were measured in alk. (4M NaOH and 7.5M KOH) and acidic (3M ...
This paper presents a family of three transformerless converters (buck, boost and buck-boost) with two specific characteristics: the quadratic static gain as a function of the duty cycle ratio, and the division of the higher voltage level between the two s ...
We present a description of ion transport through geometrically defined nanoslits. The description was obtained through impedance spectroscopy measurements of electrolytes with different physico-chemical parameters. The number of 50 nm high nanoslits prese ...