Ac-Dc Conversion Without Reversal TRIZ Cases

Selective switching segments charging phases to prevent overcurrent while ensuring DC capacitor voltage matches the AC grid.

Dynamic switching bypasses voltage dividers at low levels, eliminating waveform rounding and timing delays from RC time constants.

A wireless power receiver adjusts received electric power by controlling switching signal phases.

A radio frequency power source device uses a switching voltage divider to deliver antiphase outputs with selectable high or low voltage levels.

A power conversion device places an intermediate terminal on the base to connect smoothing components directly.

A switching power supply adjusts its operating frequency via a dedicated correction circuit to match specific input voltage levels.

Segmented amplifying units lower voltage stress on semiconductors, enabling smaller FETs and reducing passive component size.

A power converter uses parallel controlled current sources to distribute rectifier current and regulate terminal voltages.

A dimmer circuit detects applied voltage using zero-cross signal analysis.

Wireless induction coils detect strap or deterioration in RF signal paths, triggering interlock alarms to halt abnormal semiconductor processes.

An electromagnetic band gap structure in a power conversion bus bar reduces equipment volume while suppressing high-frequency noise.

A control circuit shorts electrodes to suppress excessive voltage in wireless power reception devices.

A non-isolated symmetric self-coupling transformer integrates phase-shifting and power transformation functions within an 18-pulse rectifier architecture.

An intermediary current source circuit cancels low frequency ripple from power factor correction, providing stable LED drive current.

Identical converter branches enable worldwide grid compatibility by eliminating topology changes and reducing device complexity.

Segmented pre-charging units balance capacitor voltage and enable hot-plugging without increasing system size.

A metallic foreign object detector uses a control circuit to manage resonance capacitor switches for accurate presence detection.

A microcomputer generates switching signals for power converters using general-purpose timers and a single PWM modulator.

A DC power supply device controls capacitor charging at three times the AC frequency to balance phase currents.

A rectifier bridge replaces diodes with MOSFETs to eliminate voltage gaps and reduce power losses in piezoelectric energy harvesting.

A power harvesting circuit uses diode voltage reduction circuits to minimize voltage drops.

Segmented DC bus architecture with bidirectional converters isolates faults and shares energy storage, resolving reliability versus complexity trade-offs.

A fixed-off-time power factor correction controller modulates the switch-on time of a power transistor to maintain constant operating frequency.

A high-resistance Al-Si-N layer in the electrode base redistributes current flow in compound semiconductor devices.

Segmenting inverters into voltage and current source modes based on local impedance maintains system frequency equality.

Dockable power module adds high-wattage transmission to basic apparatus, eliminating unnecessary manufacturing costs for standard devices.

Time-domain multiplexing alternates partial input powers to ensure channel independence without requiring elaborate filtering or failsafe components.

An on-time limiting circuit prevents isolation transformer saturation while a universal power up circuit ensures stable voltage across varying input levels.

Segmented PID feedback aligns output voltage segments to reduce harmonic distortion and improve conversion efficiency across the full input power cycle.