Sense amplifier and operation method thereof
US-11848046-B2 · Dec 19, 2023 · US
Positive-feedback circuit arrangements without negative feedback
Positive-feedback circuit arrangements without negative feedback · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H03F1/38 |
| Official title | Positive-feedback circuit arrangements without negative feedback |
| Display label | Positive-feedback circuit arrangements without negative feedback |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 10 |
| 2020 | 10 |
| 2021 | 7 |
| 2022 | 13 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Applying a positive feedback voltage to an electromechanical sensor utilizing a voltage-to-voltage converter to facilitate a reduction of charge flow in such sensor representing spring softening
US-11835538-B2 · Dec 5, 2023 · US
Amplifier circuit
US-11736070-B2 · Aug 22, 2023 · US
Power amplifier using multi-path common-mode feedback loop
US-2023246610-A1 · Aug 3, 2023 · US
Operational amplifier based on metal-oxide TFT, chip, and method
US-11626845-B2 · Apr 11, 2023 · US
Method and apparatus for reducing power-up overstress of capacitor-less regulating circuits
US-11599132-B2 · Mar 7, 2023 · US
Applying a positive feedback voltage to an electromechanical sensor utilizing a voltage-to-voltage converter to facilitate a reduction of charge flow in such sensor representing spring softening
US-2022413003-A1 · Dec 29, 2022 · US
Programmable gain amplifier and a delta sigma analog-to-digital converter containing the PGA
US-11522554-B2 · Dec 6, 2022 · US
Multi-element resonator
US-11515838-B2 · Nov 29, 2022 · US
Method and apparatus for reducing power-up overstress of capacitor-less regulating circuits
US-2022276666-A1 · Sep 1, 2022 · US
Applying a positive feedback voltage to an electromechanical sensor utilizing a voltage-to-voltage converter to facilitate a reduction of charge flow in such sensor representing spring
US-11428702-B2 · Aug 30, 2022 · US
Method and system for high speed decision-feedback equalization (dfe)
US-2022271978-A1 · Aug 25, 2022 · US
Multi-element resonator
US-2022247353-A1 · Aug 4, 2022 · US
Amplifier circuit
US-2022149791-A1 · May 12, 2022 · US
Radio frequency power amplifier based on power detection feedback, chip and communication terminal
US-11323074-B2 · May 3, 2022 · US
Cartesian feedback circuit
US-11309850-B2 · Apr 19, 2022 · US
Operational amplifier based on metal-oxide tft, chip, and method
US-2022116001-A1 · Apr 14, 2022 · US
Common-mode insensitive current-sensing topology in full-bridge driver
US-11290071-B2 · Mar 29, 2022 · US
Multi-element resonator
US-11271524-B2 · Mar 8, 2022 · US
Common-mode insensitive current-sensing topology in full-bridge driver
US-2021344310-A1 · Nov 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H03F1/38?
- CPC H03F1/38 is the Cooperative Patent Classification code for “Positive-feedback circuit arrangements without negative feedback.”
- How many patents are filed under CPC H03F1/38 (Positive-feedback circuit arrangements without negative feedback)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC H03F1/38 growing?
- Publication counts under this code: 5 in 2024 vs 6 in 2025 (latest complete years).