Albert-ludwigs-universitat Freiburg

Micronas Gmbh

Albert-ludwigs-universitaet Freiburg

Neuroloop Gmbh

Matthias Kuhl

Yiannos Manoli

Natalie Butz

Dennis Plachta

Thomas Stieglitz

Gilbert Alexander Erdler

Claas Müller

Jan Kollmitz

Oscar Cota

Natalie Muller

In an embodiment a tactile sensor includes a plurality of stress sensors and at least one contact body, wherein the stress sensors are configured to detect a load pattern applied on a detection surface of the contact body.

Tactile sensor including a memory with a classification scheme and method for operating a tactile sensor

A charge balancing circuit is adapted to be connected to an electrode and to a stimulation source. The charge balancing circuit has an electrode terminal for receiving an electrode voltage, an amplifier coupled to the electrode terminal and adapted to amplify and invert the electrode voltage for generating an intermediate voltage and a compensation stage. The compensation stage is adapted to generate an output current if the electrode voltage lies outside a specified safety range and to generate the output current depending on the intermediate voltage. The compensation stage is further adapted to supply the output current to the electrode terminal for driving the electrode voltage towards and/or into the safety range.

Charge balancing circuit, stimulator circuit and method for charge balancing

A biocompatible recording system includes a number of input channels for acquiring electronic information from the neural system of a living being. The recording system includes a preamplifier and further amplifier stages. An input of a second amplifier stage is coupled to an output of the preamplifier. A low-pass filter having a capacitance multiplier is connected to the second amplifier stage. The preamplifier of the recording system is designed using P-MOS technology.

Digital biopotential acquisition system having 8 channels

A voltage supply has a plurality of voltage sources to supply output connections. To achieve closed-loop control of the output voltage at the output connections, a closed-loop control circuit is provided that has an actuating element for each voltage source, and each respective actuating element has a current path via which a connection of the respective voltage source can be connected to an output connection. Each actuating element has an actuating signal input for setting the electrical conductivity of its current path. The closed-loop control circuit has a closed-loop controller to which the output voltage and a desired voltage signal are supplied. When a deviation occurs between the output voltage and the desired voltage signal, the closed-loop controller interacts with at least one actuating signal input in order to reduce the deviation. The actuating signal inputs are connected to a control device that is designed in such a way, that the current path of at least one actuating element is enabled for control by the closed-loop controller if the output current that is drawn at the output connections is present in a predetermined value range assigned to the respective actuating element, and the current path is disabled if the output current that is drawn at the output connections does not lie in the predetermined value range.

Electrical voltage supply

Growing community of inventors

Freiburg, Germany

Matthias Kuhl