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. 10, 1987
Filed:
Dec. 15, 1986
Gerhard Schwarz, Altena, DE;
Braun Aktiengesellschaft, Kronberg, Taunus, DE;
Abstract
The invention is directed to an electronic switching power supply for the controlled charging of a storage battery (61) with a boost- or trickle-charge current in dependence upon the charge condition of the battery, including a primary-pulsed blocking oscillator type converter in which the primary coil (51) of a transformer (5) is connected in series with a switching transistor (1) while its secondary coil (52) is connected in series with the storage battery (61) and a diode (31). Provided in parallel with the series connection comprising the storage battery (61) and the diode (31) are a capacitor (12) and a further diode (32) connected in series, with a switching arrangement (71) provided in parallel with the capacitor (12) being connected via a decoupling arrangement to the base of a second transistor (2) determining the turn-on period of the first transistor (1). The switching arrangement (7) operates in dependence upon the cell voltage, the cell temperature or the internal gas pressure of the storage battery, causing the electronic switching power supply to switch from a high boost-charge current to a low trickle-charge current.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile