| 发明名称 |
DC BUS VOLTAGE MEASUREMENT CIRCUIT |
| 摘要 |
A voltage measuring device includes an input configured to be coupled to a secondary of an inductive coupling of a DC to DC voltage converter. A switch coupled to the input forms a discharge path parallel to a sampling capacitor dependent on the voltage at the input equaling or exceeding a first voltage threshold and independent of an output voltage at the output of the device. The sampling capacitor is coupled to the output. A rectifier in series with the sampling capacitor is biased to conduct upon the input voltage, minus the output voltage, equaling or exceeding a second voltage. |
| 申请公布号 |
US2015253359(A1) |
申请公布日期 |
2015.09.10 |
| 申请号 |
US201414196241 |
申请日期 |
2014.03.04 |
| 申请人 |
ABB Inc. |
发明人 |
Karraker Douglas;Vallinmaki Alpo |
| 分类号 |
G01R15/16;G01R19/00 |
主分类号 |
G01R15/16 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A voltage measuring apparatus, comprising:
an input configured to be coupled to a secondary of an inductive coupling of a DC to DC voltage converter; an output; a sampling capacitor coupled to the output; a switch coupled to the input and forming a discharge path parallel to the sampling capacitor dependent on an input voltage at the input equaling or exceeding a first voltage and independent of an output voltage at the output; and, a rectifier in a series relationship with the sampling capacitor, biased to conduct upon the input voltage, minus the output voltage, equaling or exceeding a second voltage. |
| 地址 |
Cary NC US |
