Patent ID: 7358708

Claim:
A linear voltage regulator comprising: a regulating circuit for receiving an input voltage and providing an output voltage to a load, the regulating circuit comprising a regulating means and a transistor amplifier, the regulating means comprising a controlling pole, an input pole, and an output pole, and the transistor amplifier comprising a base, an emitter, and a collector; and two resistors connected to each other in series for receiving the output voltage and providing an adjusting current to the regulating circuit, wherein the base of the transistor amplifier receives the adjusting current, the emitter of the transistor amplifier is grounded, the collector of the transistor amplifier is connected to the controlling pole, the controlling pole receives a driving voltage, instead of the input voltage, for driving the regulating means so that a change in the input voltage cannot influence the conduction capability of the regulating means, the input pole receives the input voltage, and the output pole provides the output voltage.