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:
Nov. 22, 1983
Filed:
Feb. 26, 1982
Tsuneo Yokoyama, Omiya, JP;
Kazumichi Tsuchiya, Omiya, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A servo amplifier for a television camera lens for driving a servomotor to control a zooming, focusing and/or iris control is connected with a power source by way of a current limiter to prevent a voltage drop caused by a rush current. The servo amplifier is composed of a pre-amplifier and a power amplifier, in which the power amplifier is supplied with a power by way of the current limiter. The current limiter is composed of a transistor, a zener diode and resistors, and operates to limit the level of the electric current flowing therethrough.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile