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:
Jul. 24, 1990
Filed:
Jan. 26, 1989
Seiichiro Kihara, Nara, JP;
Naonori Okabayashi, Sakurai, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A waveform converting apparatus includes a first and a second common-emitter type transistors as part of a first and second emitter follower circuits respectively. The follower circuits are used for converting the impedances of an input signal independently. A first constant current supply is connected to the emitter of the first transistor provided in the first emitter follower circuit, and a second constant current supply is connected to the emitter of the second transistor provided in the second emitter follower circuit. The constant current flowing in the first emitter follower circuit is adjusted to be of a smaller value than the constant current flowing in the second emitter follower circuit. With this difference in current value there is a difference between the base-emitter voltage of the first transistor in the first emitter follower circuit and the base-emitter voltage of the second transistor in the second emitter follower circuit on the basis of the ratio of the first and second constant currents mentioned above. Also with the above described difference in currents a ceramic chip capacitor can be used in an integrating circuit of the converting apparatus.