公开(公告)号：US11714139B2

公开(公告)日：2023-08-01

申请号：US17371976

申请日：2021-07-09

Applicant: CHROMA ATE INC.

Inventor： Wen-Chung Chen ,  Ming-Ing Tsou ,  Chien-Hsing Huang ,  Chun-Sheng Hung ,  Kuan-Hung Lee

IPC: G01R31/40 ,  G01R19/10 ,  G01R1/20

CPC classification number: G01R31/40 ,  G01R1/203 ,  G01R19/10

Abstract: The present disclosure relates to an electronic load apparatus. An embodiment of the present disclosure includes an electronic load apparatus including: a measurement resistor, a reference circuit, a transistor, and a feedback circuit. The measurement resistor includes a first contact, a second contact, a third contact, and a fourth contact. The first contact and the second contact are located at a first end of the measurement resistor. The third contact and the fourth contact are located at a second end of the measurement resistor. A reference power (or a reference voltage) electrically connects to the reference circuit. The reference circuit and the first contact of the measurement resistor are electrically connected. The transistor includes a drain, a gate, and a source. The reference circuit and the gate of the transistor are electrically connected. One of the source and the drain of the transistor electrically connects to the second contact of the measurement resistor. The other one of the drain and the source of the transistor electrically connects to an output terminal of a unit under test. The feedback circuit and the fourth contact of the measurement resistor are electrically connected. The feedback circuit and the reference circuit are electrically connected.