Ac-Dc Conversion Without Reversal TRIZ Cases
- PFC-Boost Power Supply Circuit for Higher Density Holdup
Segmented PFC energy storage and boost transfer cut capacitor size while preserving holdup time and conversion efficiency.
- Boost Power Supply Circuit With Segmented Energy Storage
Smaller PFC and boost-stage capacitors transfer stored energy between stages to preserve holdup time while raising power density.
- Source Driver Gamma Switching for Blank Frame Display
A gamma voltage generator drives source lines during blank frames while amplifiers are disabled, cutting display driver IC area and complexity.
- Boost Power Supply Circuit for Holdup Time With Smaller Capacitors
A PFC-plus-boost architecture transfers stored energy between capacitors to preserve holdup time while shrinking passive components.
- Series Voltage Injection Transformer for Harmonic-Limited DC Power Flow
A multi-winding transformer with series voltage injection improves DC load power quality by stabilizing voltage and filtering harmonics.
- Phase-Change Heat Sink Structure for High-Power PV Inverters
Condensation teeth, an evaporator, and gravity-aligned airflow channels improve inverter heat dissipation while reducing cooling medium use.
- Charge Pump Bypass Circuit for Continuous Power Supply
A charge pump bypass path sustains output current when input voltage drops below threshold, improving power efficiency and reducing heat.
- Phase-Change Heat Sink Structure for PV Inverter Cooling
Condensation teeth and an evaporator improve PV inverter heat dissipation by boosting airflow and reducing cooling medium consumption.
- Charge Pump Bypass Circuit for Low-Voltage Bus Current Continuity
A charge pump on a bypass line sustains load current during bus voltage dips, improving power efficiency without added circuit scale or heat.
- Multi-Phase Switching Converter Control for Inactive Stage Loss
A phase controller suppresses body-diode current in inactive converter stages, cutting electromagnetic coupling losses and improving efficiency.
- PFC Current Sampling Timing Compensation for Turn-On Delay
Compensated PFC sampling timing corrects switch turn-on delay so actual current matches expected current, improving power factor and control stability.
- Two-Stage Solid-State Transformer for Fault-Tolerant Isolation
A two-stage architecture decouples AC/DC and isolated DC/DC conversion to cut insulation demand and improve AC grid fault ride-through.
- Voltage Harvesting Circuit for Load-Independent Recloser Power
An impedance-matched transformer-resistor circuit powers reclosers and communication devices from line voltage without separate transformers or batteries.
- Parallel Power Converter Control for Load-Adaptive DC Voltage
Load-state-based voltage commands let parallel power converters balance output without onboard communication while cutting DC load loss.
- Solid-State Transformer Topology for Lower Insulation Stress
A two-stage DC-bus topology decouples AC/DC and isolated DC/DC conversion to cut insulation demand while improving power density and fault ride-through.
- Hybrid Cooling Layout for Cascaded Power Conversion Stages
A cascaded power converter splits air and liquid cooling by stage, improving heat dissipation while reducing corrosion and enclosure maintenance.
- Dual Closed-Loop LED Driver Power Supply for Flicker and Harmonics
A dual closed-loop LED driver separates energy paths to suppress flicker, limit harmonic currents, and maintain high power factor over wide input voltage.
- Single-Transformer Output Control for Multi-Output Power Supplies
A single transformer and inductor-free secondary loop distribute power to multiple loads, cutting switching power supply size and conversion loss.
- Grounded Insulation Housing for Compact Isolation Transformers
Grounded conductive layers on the winding and housing cut insulation waste, shrink transformer volume, and raise converter power density.
- SANPC DC/DC Converter Switching for Flexible Bipolar Outputs
Zero-current and complementary switching let one SANPC DC/DC converter serve monopolar or bipolar loads with lower switching losses.
- SANPC DC/DC Converter for Bipolar Output and Low Switching Loss
A SANPC-based DC/DC converter supports bipolar and symmetrical monopolar outputs while cutting switching loss through zero-current switching.
- Transformerless Converter Earth-Fault Interruption in the DC Link
Unidirectional switches and controlled DC-link opening interrupt ground-fault loops before DC overcharging damages a transformerless converter.
- Transformerless Converter DC Fault Isolation for Earth Fault Protection
Additional unidirectional switches in the DC lines rapidly interrupt earth fault currents, protecting transformerless converters from damage.
- Differential Detection Coil Layout for Wireless Power FOD
Differential current sensing across segmented detection coils improves foreign object detection in wireless power transfer with less interference.
- High-Frequency Isolating Converter Layout for Redundant Loop Power
Cross-connected high-frequency isolating converters replace phase-shifting transformers to simplify redundant loop power and speed maintenance.
- Integrated Zero-Sequence Blocking Transformer With Leakage Inductance
An integrated core and four-winding layout creates leakage inductance to block zero-sequence currents while shrinking ATRU transformer size and weight.
- Wireless Power Resonant Inductor Asymmetry for Heat Control
Asymmetric transmit and receive inductances improve magnetic flux uniformity in enclosed wireless charging pads while reducing heat generation.
- Switching Power Supply EMI Filter Using Ferrite Bead-Capacitor Network
A parallel capacitor network with a ferrite bead reshapes filter impedance to suppress radiated EMI in high-frequency switching power supplies.