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:
Mar. 15, 1988
Filed:
Feb. 24, 1986
Kiyoteru Igashira, Nagaokakyo, JP;
Yukio Maeba, Nagaokakyo, JP;
Abstract
A regulated high-voltage power supply comprising a tuned-collector type oscillation circuit (3) having an oscillation transistor (TR4), a control circuit (2) for controlling the base current of the oscillation transistor (TR4), a resistance circuit (4) for supplying the base current to the oscillation transistor (TR4) in response to the output from the control circuit (2) and a protection circuit (5) having a protective transistor (TR3) for partially receiving the output from the resistance circuit (4) to attenuate the output from the control circuit (2) when short-circuiting is caused in the area of a load (RL). The protective transistor (TR3) is made conductive upon short-circuiting in the area of the load (RL). In order to delay the oscillation starting time of the oscillation circuit (3) immediately after releasing of the short-circuiting, provided is a time-constant circuit (51) formed by a delay capacitor (C51) and discharge resistors (R51, R52) for discharging the storage charge of the delay capacitor.