Ac-Dc Conversion Without Reversal TRIZ Cases

A voltage doubling circuit uses a silicon controlled rectifier and diode to charge storage capacitors during AC cycles.

A redundant power supply device shares drive information between constant current output circuits to enable rapid switching.

Adaptive duty cycle control in a smart matching step-down circuit resolves the trade-off between wide voltage adaptability and fixed circuit complexity.

Sense currents generate the operating voltage for a switch state controller, ensuring reliable operation when auxiliary power is insufficient.

A power supply circuit uses a secondary capacitor to operate a control circuit, enabling efficient charging of the storage element via a buck converter.

Control logic circuit drains current through network cable wire pairs to detect voltages and identify powered device signatures.

Timing-controlled capacitor-based converter generates regulated positive and negative output voltages from low induced AC sources.

A rectifying circuit uses MOSFETs as ideal diodes to minimize forward voltage drops during AC to DC conversion.

Replacing bulky electromagnetic transformers with resonant circuits reduces size, weight, and manufacturing costs for image forming apparatuses.

A control unit generates modified conduction pulses to adjust power factor in an alternating current apparatus.

Magneto-electric interactions in transparent insulators generate Tesla-level magnetic fields without current-carrying apparatus.

Variable gain sub-circuits enable tight voltage regulation while eliminating magnetic components and reducing power loss.

A leakage protection circuit generates a pull-down current during a predetermined time interval to establish a reference state for detection.

An integrated silicon carbide diode rectifier circuit uses an on-chip isolation diode to enable efficient AC to DC conversion.

Resonant frequency doubling reduces switching losses and current stress in high-power processor voltage regulation modules.

A power supply unit manages capacitor energy through a switched extended hold-up circuit.

Sampling diode cathode voltages bypasses switch inductance errors, enabling precise control and compact transformer design.

A piezoelectric transformer power converter uses simultaneous two-parameter control to manage gain and frequency for stable operation.

Director valves with anti-parallel thyristors and dedicated commutation cells reduce DC current during faults while maintaining low ON state loss.

A multimode LED driver circuit switches between electrical and inductance ballast configurations to power light emitting elements.

Self-driven gate-drive circuitry controls power MOSFETs to emulate diode bridge behavior, reducing conduction losses and eliminating complex control circuits.

A UPS bypass device supplies pulsed power from an AC source to clear faults without complex protective devices.

A driving apparatus uses a control signal to gradually turn on a switch, reducing spike current during operation.

Segmented bridge control reduces switching losses by dynamically activating fewer transistors at low loads, improving efficiency without altering frequency.

Independent output circuits reduce average voltage at the auxiliary node, lowering standby power consumption in LED lighting systems.

Internal capacitor segmentation enables gradient adjustment without external components, preventing startup current failures.

A bridgeless PFC booster circuit minimizes voltage drops by storing and releasing energy through a single inductor.

A precise power detector uses voltage and current mutual inductors to transform RF signals for accurate measurement.

A power sourcing equipment circuit generates switching signals to measure line-side voltage across a transformer coil.

Segmented DC current sensors enable flexible placement while computational correction of AC-side voltage commands balances parallel converter outputs.

A split-drive transformer absorbs parasitic capacitance into its resonant tank to enable soft switching.

A control unit measures input voltage and current directly to determine power.

A bypass circuit uses magnetically coupled reactors and interleaving switching control to cancel noise frequencies.

Cast skin press-fit holes eliminate cutting processes to reduce costs while local loads protect semiconductor pellets from deformation.

A control circuit samples voltage parameters at AC zero crossings to generate sinusoidal current references for power converters.

A zone detection circuit measures mains power characteristics to set safe current limits within computer systems.

A controller delays switching element ON time to synchronize phase current with voltage.

A secondary side controller uses a VBUS tracking reference scheme to detect true negative sense events in flyback converters.

Integrates rectifier, switch, and control circuitry on a single chip to generate stable DC power levels, eliminating bulky input capacitors.

A modular multilevel converter submodule topology circuit directs fault currents through capacitors using thyristors and diodes.

Active current injection via controllable valves reduces mains reactions and harmonic distortions while eliminating large magnetic components.

A vehicle inverter system manages DC link voltage using parallel capacitors and controller-driven switching elements.

Segmented buck converter switches LED strings sequentially, eliminating interruption periods and reducing total harmonic distortion.

A single opto-coupler encodes load requests into feedback signals to eliminate sensing resistors and reduce device complexity.

An active CMOS rectifying circuit converts RF signals to DC voltage, enabling high-power wireless charging while maintaining full CMOS compatibility.

Multi-phase transformer rectifier converts low voltage AC to high voltage DC using segmented winding groups.

A single switching mode power supply reduces standby consumption to 0.5 watts by merging main and standby circuits, cutting PCB size and cost.

A control circuit dynamically adjusts operating current in an ideal diode system to optimize power usage.

Dynamic modulation of inversion time percentages optimizes energy efficiency while managing control mechanism complexity.