US 7,579,813 B2
Power regulator having a voltage regulator module and having a voltage buffer module to provide a constant voltage output
Cheng-Shun Fan, Taipei (Taiwan)
Assigned to Inventec Corporation, Taipei (Taiwan)
Filed on Jan. 29, 2007, as Appl. No. 11/698,888.
Prior Publication US 2008/0180082 A1, Jul. 31, 2008
Int. Cl. G05F 1/614 (2006.01)
U.S. Cl. 323—231  [323/266] 5 Claims
OG exemplary drawing
 
1. A power regulator with a constant-voltage output, comprising:
a voltage regulator module, for receiving an input voltage, stabilizing the input voltage in a predetermined voltage range, and outputting a stable voltage corresponding to the predetermined voltage range, wherein the voltage regulator module comprises a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, and a Zener diode; and
a voltage buffer module, electrically coupled with the voltage regulator module, for buffering the stable voltage, and outputting the stable voltage to a next stage circuit, wherein the voltage buffer module further prevents a current of the next stage circuit from flowing into the voltage regulator module.