公开(公告)号：US10661673B2

公开(公告)日：2020-05-26

申请号：US15384510

申请日：2016-12-20

Applicant: EATON CORPORATION

Inventor： Andrew Yang ,  Tom Xiong ,  Jerry Zhang ,  Lily Du ,  Harry Zhang

IPC: B60L53/60 ,  B60L53/16 ,  B60L53/31 ,  B60L53/18 ,  B60L53/30

Abstract: A pilot signal detection and indication unit includes a pilot signal scaling unit structured to generate a scaled pilot signal by shifting a pilot signal using a bias voltage and scaling down the pilot signal, a pilot signal duty cycle comparator unit structured to generate a limited pilot signal that has a fixed peak voltage and a duty cycle that is equivalent to the duty cycle of the pilot signal, a processing unit structured to determine a voltage value and the duty cycle value of the pilot signal from the scaled pilot signal and the limited pilot signal, and to generate an indication signal based on the determined voltage value and duty cycle value, and an indication unit having a number of indicators and being structured to activate selected ones of the number of indicators based on the indication signal.

公开(公告)号：US20190097415A1

公开(公告)日：2019-03-28

申请号：US15716584

申请日：2017-09-27

Applicant: Eaton Corporation

Inventor： Andrew Yang ,  Tom Xiong ,  Harry Zhang ,  Alex Zhuang ,  Jerry Zhang ,  George Zhang

IPC: H02H3/32 ,  H02H3/04 ,  G01R19/165

Abstract: An electronic device that is configured to be coupled to an alternating current (AC) power unit that includes an AC input power signal is described. The electronic device includes a reference signal generator circuit that is configured to generate a reference signal based on a direct current (DC) power source, a voltage divider circuit that is configured to scale the reference signal for application to the AC input power signal to generate a divided AC input power signal, an amplifier circuit that is configured to output a fault indication signal responsive to the divided AC input power signal, and an amplifier control circuit that is coupled to the amplifier circuit and is configured to control a fault indication signal level of the fault indication signal that is output by the amplifier circuit. Related methods and computer program products are also described.