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:
Sep. 24, 1991
Filed:
Oct. 30, 1989
Akira Sekiguchi, Higashimatsuyama, JP;
Diesel Kiki Co., Ltd., Tokyo, JP;
Abstract
A peak hold circuit and a sample-and-hold circuit are provided for accurately and immediately detecting variations in a load connected to a generator. The peak hold circuit holds a peak voltage of a waveform voltage signal having an amplitude corresponding to the magnitude of the load. The peak hold circuit is responsive to a reset signal from a reset circuit to be reset during a time interval between a point after the peak of the waveform voltage signal and a point before a subsequent peak of the waveform voltage signal, so that the peak hold circuit is reset, thereby renewing the peak voltage held in the peak hold circuit. When the sample-and-hold circuit receives a sampling instruction signal from a sampling instruction circuit during a time interval between a point after the peak of said waveform voltage signal and a point before said reset signal is outputted, the sample-and-hold circuit operates in a sampling mode to sample the peak voltages outputted from the peak hold circuit. The sample-and-hold circuit is switched into a hold mode before the peak hold circuit is reset, so as to hold the sampled peak voltage.