Patents by Inventor Hubertus Schauerte

Hubertus Schauerte 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).

  • Testing instrument for detectlng alternating voltages in mains and alternating electromagnetic fields in the vicinity of voltage-carrying conductors
    Patent number: 4724382
    Abstract: An electrical measuring or testing instrument is disclosed for detecting alternating voltages in mains, induced voltages in ungrounded conductors, and alternating electrical fields in the vicinity of voltage-carrying conductors. The instrument includes a constant-voltage source, a test prod, which is connected via a protective resistor to the input of an amplification circuit and via a further resistor and a switching transistor to the negative pole of the constant-voltage source, and an LED connected to the constant-voltage source and controlled by the amplifier circuit. The amplifier circuit has a very high amplification factor, so that even weak alternating fields in the vicinity of voltage-carrying conductors can be detected. The amplification is normally reduced with the aid of a resistor connected between the input of the amplifier circuit and the negative pole of the voltage source.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: February 9, 1988
    Inventor: Hubertus Schauerte