US 12,078,608 B2
Power supply device with protection function when water ingress occurs
Tzu-Tseng Chan, New Taipei (TW); Chih-Chiang Chen, New Taipei (TW); and Chuan-Jung Wang, New Taipei (TW)
Assigned to Acer Incorporated, New Taipei (TW)
Filed by Acer Incorporated, New Taipei (TW)
Filed on Oct. 3, 2022, as Appl. No. 17/958,440.
Claims priority of application No. 110140666 (TW), filed on Nov. 2, 2021.
Prior Publication US 2023/0133557 A1, May 4, 2023
Int. Cl. G01N 27/22 (2006.01)
CPC G01N 27/223 (2013.01) 10 Claims
OG exemplary drawing
 
1. A power supply device, comprising:
a housing having a plurality of joints;
a power converter configured in the housing;
a controller configured in the housing and configured to control the power converter to provide an output voltage;
a plurality of humidity sensitive capacitors respectively configured in the housing and adjacent to a corresponding joint of the joints and jointly providing a sensing capacitance value; and
a feedback circuit configured in the housing, coupled to the power converter, the controller, and the humidity sensitive capacitors, and configured to change a gain value and a compensation bandwidth of the output voltage in response to a change of the sensing capacitance value,
wherein in response to humidity of at least one of the joints increasing, the sensing capacitance value is reduced and the gain value and the compensation bandwidth are thus reduced.