Constant current circuit
US10969815B2 · kind B2 · utility
0Cited by
8References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2019 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Sep 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/91
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The constant current circuit includes a constant current generation circuit, a start-up detection circuit configured to detect start-up of the constant current generation circuit, and a clamp circuit configured to output a start-up voltage to the constant current generation circuit. The start-up voltage output from the clamp circuit is a voltage close to gate voltages that are higher than gate voltages of transistors that form a current mirror circuit of the constant current generation circuit, in a state where the constant current generation circuit is operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.