Title:
【発明の名称】電源回路
Document Type and Number:
Japanese Patent JPH11504800
Kind Code:
A
Abstract:
In a self-oscillating power-supply circuit for charging a battery, the main switching transistor is turned off by a second switching transistor (T2) of an opposite conductivity type, which is arranged in series with the main switching transistor (T1) via a sensing resistor (R8). This configuration allows rapid switching of the main switching transistor (T1). The power-supply circuit can be turned on and off in a simple manner (R7, T4). Moreover, it is simple to provide a compensation (R4) for varying mains voltages, an auxiliary voltage (D6, C4) for powering additional circuits (R9, R10), which auxiliary voltage also remains available when the power-supply circuit is turned off.
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Inventors:
Herringa Schelte
Application Number:
JP53074597A
Publication Date:
April 27, 1999
Filing Date:
February 07, 1997
Export Citation:
Assignee:
Philips Electronics Nemrose Fennaught Shap
International Classes:
H02J7/02; H02M3/156; H02J7/10; H02M3/158; H02M3/28; H02M3/338; (IPC1-7): H02M3/28; H02J7/10
Attorney, Agent or Firm:
Akihide Sugimura (6 others)