Output detection circuit
US12228957B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2023 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/461
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The disclosure: a positive mirror FET, through which a positive mirror current that is proportional to a positive-direction current in currents of an output FET in positive and negative directions is made to flow; a first operational amplifier, receiving a constant voltage at one end, receiving an upstream side voltage regarding the positive mirror current of the positive mirror FET at the other end, and outputting a voltage corresponding to the upstream side voltage regarding the positive mirror current of the positive mirror FET by converting an output voltage into a current and feeding back the current to the other end; a negative mirror FET, through which a negative mirror current that is proportional to a negative-direction current in the currents of the output FET in positive and negative directions is made to flow; and a second operational amplifier, receiving a constant voltage at one end, receiving an upstream side voltage regarding the negative mirror current of the negative mirror FET at the other end, and outputting a voltage corresponding to the upstream side voltage regarding the negative mirror current of the negative mirror FET by converting an output voltage into a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.