Switching regulator having at least one regulated output voltage

摘要

A switching regulator having a power switch arranged in a main circuit of the primary side in series with a current-measuring resistor and having a delta voltage source in series with the current-measuring resistor. The delta voltage source can be realized in a simple manner in that the current-measuring resistor is arranged in the emitter circuit of an auxiliary transistor whose base is connected to a periodically chargeable and dischargeable capacitor. A regulation of at least one output voltage is preferably provided by underlying voltage regulation in combination with a current-dependent inductance. The switching regulator can be advantageously employed as a feeding apparatus in electrical communications transmission technology.