Ac-Dc Conversion Without Reversal TRIZ Cases

See how protective semiconductor switching elements with maximum allowable current below 135 A

See how electromagnetic coupling and hardware-based analog control achieve electrical isolation

See how inverter circuits using semiconductor switching elements with maximum allowable current

See how dynamic converter channel selection based on load and motor speed reduces switching str

See how isolated power supplies and oscillation electrodes enable uniform dielectric thawing in

See how a specific frequency bandpass unit filters pulsatile components from DC bus voltage to

See how dynamic pulsation-width control reduces smoothing capacitor stress in refrigeration pow

See how frequency-agnostic zero cross control synchronizes relay actuation with AC voltage zero

See how relay-controlled noise filters and inrush-current inhibition resistors reduce reactive

See how segmenting power source units and load circuits allows total power to exceed limits wit

See how segmented power source units on a single board supply independent external load circuit

See how a dynamic filter circuit cuts off switching noise while passing valid current signals t

See how inverter and converter coordination prevents DC terminal voltage collapse during drain

See how optimized reactor inductance and capacitor sizing eliminate current-limiting circuits w

See how optimized capacitor parameter ranges reduce fifth and seventh harmonics while cutting a

See how an integrated active filter detects and compensates harmonic currents from air conditio

See how a buck converter downconverts DC bus voltage to enable low-voltage condenser fan motors

See how a multi-pulse transformer with tapped primary or secondary windings maintains constant

See how a DC to DC boost converter dynamically adjusts output voltage based on load parameters

See how a bridge diode unit enables home appliances to operate in both AC and DC environments,

See how a snubber circuit with diodes and capacitor redirects recovery currents away from the s

See how a bridge-rectifier converter module enables single-phase ECM installation in three-phas

See how a PFC circuit transitions between active and inactive modes based on AC phase angle to

See how segmented AC-DC converters optimize thermoelectric cooler power efficiency by switching

See how a backflow preventing element paired with commutating means redirects recovery current

See how a rectifier with series-connected capacitors and switching control suppresses harmonic

See how a segmented dual-boost converter with tapped windings adjusts output voltage dynamicall

See how phase-fired control maintains reduced standby power on the DC bus, preventing controlle

See how capacitive power harvesting from motor windings eliminates extra control wiring in evap

See how reactive current detection and dynamic voltage phase correction maintain unity power fa

See how an active filter device with dynamic current allocation reduces harmonic currents from

See how a dual bridge rectifier PFC circuit with dynamic bypass control reduces reactive power

An interleaved resonant converter uses passive-element soft switching to cut switching loss and EMI in air conditioner motor drives.

Two AC-DC converters switch between high COP and high heat pumping TEC modes to cut total AC power draw across operating ranges.

Phase-leading the compensating current offsets PI control delay in active filters, improving harmonic suppression in power current.

Multiple transformer taps and phase-shifted outputs keep chiller VSD voltage constant across input ranges while reducing harmonics.

Equal on-duty control of two switching elements and a capacitor-reactor network raises DC voltage while cutting switching loss and control complexity.

Relay-switched noise filtering cuts standby reactive power while an inrush-limiting circuit protects diodes in air-conditioner power conversion.

A parallel commutation path redirects backflow current to cut recovery current, conduction loss, and noise in power converters.

A single current sensor enables sinusoidal compressor drive, cutting torque fluctuation, noise, vibration, and inverter complexity.

Load-state detection switches DC distribution between adaptive and fixed voltage modes to cut conversion cost and keep supply stable.

A shared-arm inverter switches between half- and full-bridge modes to cut switching elements and limit heating in an inactive coil.

A single-transformer AC-DC converter replaces two PFC and regulation stages to cut inductors, volume, cost, and conversion losses.

A resistor-free snubber linked to a clamp circuit cuts surge and stationary losses, improving converter efficiency and high-frequency operation.

Burst-mode switch timing keeps the input inductor demagnetized, limiting light-load voltage stress and reducing rectifier switch cost.

Voltage-triggered capacitor switching supports electromagnetic actuator energy at low bus voltage while reducing capacitor size in circuit breakers.

An integrated subsidiary power circuit feeds the SST control module from the main bus, improving reliability while avoiding separate isolation hardware.

Stored bus-capacitor energy powers control loads and discharges safely at shutdown, removing separate UPS units and bleed resistors.

A duty-ratio balancing loop regulates each phase from bus-voltage differences to stabilize multi-bus converters without extra hardware.

Total-current hysteresis control coordinates parallel partial rectifiers to suppress circulating currents and reduce inductance cost in wind turbines.

Fractional-pole-pitch passive windings decouple Back-EMF phases to cut DC ripple and conversion loss in a multi-port generator-rectifier.

Capacitor-derived operating power lets each multilevel converter cell drive switches and detect voltage without extra supplies, cutting complexity and cost.

Abnormal transformer waveform detection turns off the lower bridge switch early to prevent clamp capacitor overvoltage and charging faults.

A controller uses predefined switching windows to stop overlap in bidirectional switch states and block unintended current paths under phase-voltage noise.

Concentric groove GaN JBS diodes with Mg-doped P-type BN enable a compact monolithic three-phase DRU with higher voltage range and power handling.

Zero-voltage switching between rectification modes suppresses surge current in bridge converters, extending relay and component life.

Transistor-based load protection replaces real diodes to block polarity reversal, limit overcurrent, and cut power loss in redundant supplies.

Modular three-winding transformer units replace centralized phase shifting to cut harmonics, improve power factor, and add HVDC redundancy.

A shared-switch inverter drives two heating coils in half-bridge or full-bridge modes to cut circuit complexity and manufacturing cost.

A shared PFC and DC-DC stage switches between DC inputs by power status, cutting converter cost, size, and complexity.

A top-core leakage flux path and integrated transformer-rectifier block cut converter footprint while improving heat dissipation.

Switch-terminal sensing with attenuation, filtering, and sample-and-hold replaces the auxiliary winding for accurate QR flyback overpower protection.

Phase section control keeps DC link voltage below 80 V, enabling compact explosion-proof power supplies with simpler insulation and testing.

A vertically integrated transformer and rectifier on opposite substrate sides cuts converter footprint while preserving thermal paths and reliability.

A switched dynamic current mirror rectifies bi-directional current while avoiding transistor mismatch errors that degrade conversion accuracy.

During DC network faults, converter switching shares current between transistors and diodes to cut losses and prevent thermal breakdown.

Independent control of positive and negative converter legs suppresses common mode and resonant currents to stabilize DC output voltage.

Phase-shifted zigzag and delta transformer outputs let parallel low-voltage VFDs drive standard motors with lower harmonics and less complexity.

A modular power connection lets a PM-motor waste disposer fit wall-outlet or hardwired installs while reducing cord damage in shipping.

Voltage-triggered switching of secondary windings and capacitors extends constant-power charging across a wide output range with lower complexity.

A single-stage isolated AC-DC converter combines PFC and DC-DC conversion, cuts switching loss, and avoids extra inrush limiting.

Periodic high-side and low-side switching discharges the bus capacitor through the mains, cutting losses and supporting high-rate cookware detection.

Ramp emulator circuitry keeps gain crossover frequency independent of Vin and Vout, improving buck regulator transient response and accuracy.

A quasi-resonant series-switched inverter extends soft-switching operation to cut power loss and EMI in flexible induction cooktops.

PWM shaping of the AC half-wave creates a smooth phase transition for brake or coil loads, cutting noise and EMC emissions.

Dynamic reverse excitation control keeps zero-voltage switching across phase angles while reducing switching loss and input current distortion.

Local voltage feedback lets a converter adapt load power to renewable grid conditions, stabilizing voltage and frequency without communication.

Closed-loop control keeps series power conversion units at the same voltage, cutting switching losses and improving reliability.

Immediate phase-loss detection switches a three-phase converter between operating states to avoid shutdown and maintain stable AC control.

Using existing VBC electrical signals, this case suppresses FDCTS DC-side oscillation without added hardware, improving stability and reliability.

Specific well-region capacitive elements raise voltage multiplier capacitance to reach nearly 2x supply voltage with low ripple and higher efficiency.

Half-wave rectifiers superimpose three-phase power and use a neutral return path to balance current, cut heat, and stabilize output voltage.

Immediate switch shutdown during surge events, with real-time restart after surge disappearance, protects active rectifiers without long efficiency loss.

A single-inductor converter topology removes clamping diodes to improve EMC, avoid inductor overheating, and stabilize battery discharge.

Local magnetic cores around each switching element filter stray-capacitance displacement currents, cutting common-mode noise without bulky filters.

Adjusting bidirectional switch duty by AC input polarity enables ZVS in an LC resonant inverter, cutting switching loss and THD.

Alternating arm switching in a bridge converter spreads transistor heat, limiting hot spots and reducing heat sink burden.

Pre-boosting capacitor voltage before switch changeover suppresses inrush current and protects converter components in motor drives.

Load-aware control clamps parallel PFC output voltage when no load is present, cutting switching loss while preserving high power capability.

Standardized ferroresonant transformer modules share one capacitor tank to deliver constant LED current and voltage with lower customization cost.

A bidirectional DC/DC suppression module cuts input current oscillation and module circulation in non-isolated converters for efficient power sharing.

Non-resonant apertures and tuning elements cut radiation loss while evenly feeding identical rectifier modules from a waveguide.

A single resonant stage combines AC-DC and DC-AC conversion, cutting components, weight, and cost while regulating voltage efficiently.

Dynamic switch control adds capacitance at low input voltage and disconnects it at higher voltage to cut ripple and noise in power conversion.

A dual charge pump with threshold switching lowers start-up voltage, cuts capacitor size, and harvests power from weak AC sources.

A switched bypass path charges the output capacitor at start-up, then protects the resistor from ESD and surge pulse overheating.

A clamp transistor limits smoothing capacitor voltage in an AC/DC rectifier, enabling smaller capacitors, lower cost, and less common mode noise.

By combining auto transformer and rectifier functions, this delta secondary transformer cuts aircraft weight, occupied space, and production cost.

Resonant-period-based interval control and zero-current detection cut switching loss, improve power factor correction, and reduce harmonic distortion.

Switching bulk capacitors from parallel to series boosts PSU internal voltage after AC loss, extending hold-up time for safe shutdown.

Dual voltage-time and pulse-width sensing distinguishes real NSN events from false triggers in primary-side-controlled AC-DC converters.

A control circuit switches transformer secondary topology between LLC and flyback modes to keep efficiency high and ripple low across wide output voltages.

Multiple control signals are encoded into one PWM link across optical isolation, cutting opto-isolator count, board space, and hardware cost.

Duty-cycle overlap and phase-shifted SPWM cut common mode voltage in single-phase 3-wire motors without added filters or chokes.

An in situ silicon nitride first insulating layer protects the InAlGaN barrier surface, reducing defects, current collapse, and on-resistance.

Rear-stage pin feedback lets the front stage raise or lower bus voltage to handle low, medium, and peak load demand efficiently.

Smaller staged capacitors and a boost switch suppress inrush current while preserving holdup time, power density, and efficiency.

Closed-loop control of a resonant converter and voltage multiplier cuts radiated emissions and circuit complexity in corona generators.

An isolation circuit shifts over-current signals to low-voltage control, protecting voltage converters without costly high-voltage devices.

Multiple single-phase converter strings shift power conversion to elevated frequency, cutting transformer bulk and easing hydrogen plant installation.

Automatic voltage-based switching between main and backup power modules keeps a compact surgical robot powered during supply faults.

An attenuation circuit equalizes AC and DC detection levels, enabling stable input drop sensing and lower switching transistor losses.

Fast LCC firing-angle reduction and MMC active-power correction suppress HVDC fault overcurrent and submodule overvoltage.

Switching-based power buffering replaces bulky capacitors, shrinking AC-DC supplies while preserving output voltage stability and transient response.

Dual-mode switch timing uses output and inductor feedback to prevent PFC voltage overshoot and keep power transfer stable.

An auxiliary primary winding, inductor, and capacitor shape input current toward a sinusoid, improving power factor in insulated low-voltage supplies.

AC harmonics carry common-mode information between power conversion cells, avoiding communication lines while preserving voltage quality.

A charging capacitor feeds the storage capacitor across AC half-cycles, limiting overvoltage even if the SCR fails.

Asymmetric gate resistance speeds turn-on and slows turn-off to cut power loss, surge voltage, and switching noise in a transformer power supply.

Relocating the common-mode inductor to the DC side cuts loss and inductor size while preserving EMI filtering in high-power adapters.

A shunt regulator with switch timing and enable control clamps antenna-fed startup voltage before it exceeds IC withstand limits.

Combining arm current and DC link voltage lets an MMC distinguish temporary and permanent DC faults for faster sub-module bypass protection.

Dynamic ON-time adjustment in a switching regulator improves power factor and reduces THD near the AC voltage valley.

A shared feedback terminal detects external setting signals, enabling power supply IC communication without adding a dedicated pin.

An active clamp with a capacitor and flyback path captures ringing energy, cuts rectifier voltage stress, and reduces power loss.

Neural-network prediction helps power converters self-tune error signals, maintaining stable output despite aging, design changes, and varying conditions.

Temperature-based duty charging avoids early charge cutoff in aerosol inhalers, extending operating time while protecting battery life.

MEMS switches replace diode current valves to cut rectifier heat and power loss, while parallel diodes handle surge pulses.

Peak-limiting control in a high-power-factor AC/DC converter cuts LED output current ripple, reducing flicker and capacitor size.

A shared main PCB with pin-compatible module interfaces cuts converter variant count, lowering development, production, and logistics effort.

A two-segment compensation current scheme corrects diode, cable, and cross-regulation errors to keep flyback load voltage stable.

Dynamic voltage control lets one converter serve different loads, cutting conversion circuits, data tables, and power consumption.

A rectifier, overvoltage protection, and buck-boost converter stabilize spindle voltage during non-contact power and data transfer.

By detecting converter operating states and retuning droop from bus load current, parallel power units keep supplying loads without centralized control.

An active power buffer with switched capacitor storage shrinks AC-DC power supplies while maintaining output regulation and unity power factor.

Layered shielding, insulation, and air gaps create a longer creepage path that lowers field stress and improves partial discharge resistance.

A single microcomputer-controlled board adapts single- and three-phase hoist motors, reducing board variants while improving switching life and power detection.

A single-stage isolated bidirectional converter removes bus capacitors and boost inductors to cut losses, size, and magnetic interference.

Switchable capacitor networks let a wireless charging receiver retune operating frequency to sustain output voltage and power at longer coil distances.

A wall-mounted power supply device converts alternating current to direct current for portable computing.