Patents by Inventor Andreas Soltau

Andreas Soltau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Circuit arrangement for capacitance amplification
    Patent number: 5650746
    Abstract: A simple circuit arrangement for amplifying the effect of a capacitance. The input of the circuit arrangement is connected to an output of a current mirror circuit and, via the capacitance, to an input of the current mirror circuit to which a constant current (I) of known magnitude is applied. The degree of amplification of the effect of the capacitance is dependent on the area ratio n between the input transistor and the output transistor of the current mirror circuit. A constant current (n.multidot.I) is applied to the output of the current mirror circuit and is equal to the current applied to the input of the current mirror circuit multiplied by the area ratio n.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: July 22, 1997
    Assignee: U.S. Philips Corporation
    Inventor: Andreas Soltau