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:
Jun. 14, 1977
Filed:
Jun. 23, 1975
Otto Richard Buhler, Boulder, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A detection device for sensing malfunctions in a wide band power amplifier, driving the take-up spool motor of a reel-to-reel tape transport system, is disclosed. A feedback loop is connected from the output of the amplifier to a malfunction junction positioned at the input of the amplifier. The signal at the malfunction junction is monitored and compared with a predetermined range of standard reference signals. Whenever the malfunction junction signal is out of the predetermined range, the power amplifier is turned off thereby preventing damage to the tape. A filter means is positioned so as to desensitize the compare means until the amplifier is operating at steady state.