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. 23, 2004
Filed:
Dec. 21, 2001
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In the series regulator, when an external starting voltage source has started operation, a bias current is supplied from a fourth transistor to a reference voltage circuit, and a reference voltage is supplied form the reference voltage circuit to an amplifier. When an output voltage of a power transistor rises, and a value of a divided voltage applied to a sixth transistor has reached a value of a constant voltage being applied to a fifth transistor, the sixth transistor is turned on, and the fifth transistor is turned off. A tenth transistor starts supplying a bias current to the reference voltage circuit. At the same time, a bias switching circuit starts operation, and interrupts a supply of the bias current from the fourth transistor to the reference voltage circuit.