The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1985
Filed:
Aug. 09, 1984
Martin Maschek, Wurenlos, CH;
BBC Brown, Boveri & Company, Limited, Baden, CH;
Abstract
An amplifier circuit including a resistor connected in series with a signal amplifier, which is designed as a feedback inverting amplifier, and an additional switching circuit serving to suppress surges. Such an amplifier circuit can, e.g., be used for amplifying the output signal of a digital-to-analog converter. The additional switching circuit operates independently of external control and without itself producing spurious signals. The switching circuit is placed in parallel to the series resistor and includes an inverting amplifier, which has faster response time than the signal amplifier, a high-pass filter and an impedance converter having a high input impedance connected in series with the input to the inverting amplifier. A voltage limiting two-terminal network is connected in series with the output of the inverting amplifier.