Ac-Dc Conversion Without Reversal TRIZ Cases

A power conversion device detects source voltage changes using output DC voltage and current values.

An isolation transformer breaks common nodes between parallel converters, eliminating circulating current while maintaining redundancy.

Segmenting transformer windings isolates the charging resistor from excitation currents, eliminating Joule heating and enabling a downsized charging unit.

Hybrid forward and backward threshold voltage compensation in a multi-stage rectifier reduces the power-up threshold while minimizing reverse leakage current.

Series-coupled switches apportion DC output voltage across load capacitors, enabling 24 kV generation using 6 kV semiconductor devices.

A semi-active bridge rectifier combines diodes and active transistors to convert voltage polarity in Power over Ethernet networks.

An AC-DC converter uses a rectified voltage estimation unit to derive voltage values without physical detection.

Bridgeless PFC converter topology reduces semiconductor count in the conduction path to lower power loss.

A bidirectional switch capacitor buck-boost converter eliminates large inductors to increase power density.

Detection circuit extracts feedback voltage to regulate LED current, eliminating ballast maintenance costs and energy waste.

An H-shaped inductor generates driver bias voltage through electromagnetic induction and turn ratios.

An adaptive current source generator adjusts the saw signal slope in response to threshold changes, reducing error amplifier stress across varying line inputs.

A rectifying circuit deactivates a series transistor to block reverse current flow in discontinuous mode power supplies.

Dynamic target value adjustment prevents surge voltages during AC voltage restoration while maintaining stable power factor correction.

A power conversion apparatus uses active switching control to improve input power factor without bulky AC reactors.

A rectifier circuit uses a switch to connect capacitors with different capacitance values, dynamically adjusting the filter configuration.

A power supply module dynamically regulates energy to a switching mode control circuit using segmented bias windings.

Segmented insulation shielding reduces weight and cost while preventing corona discharges in electron beam sterilization devices.

Common communication bus with multiple insulation gaps reduces submodule construction costs.

A high-voltage filter uses a source follower transistor to derive an intermediate voltage between two series capacitors.

Replacing bulky transformers with a frequency converter reduces space and cost while maintaining reliable energy supply during weak wind periods.

A hybrid rectifier switches between full bridge and voltage doubler modes to optimize power density.

A circuit interrupter uses a diode sensor and amplifier to trip contacts based on conductor temperature.

Auxiliary DC voltage charges multilevel converter cell capacitors via selective switching, eliminating precharging resistors and reducing device complexity.

A digital system extracts alternating current components from rectified signals to estimate ripple amplitude and period.

A switching unit routes power from AC-DC and DC-DC converters to USB devices based on operational mode.

A regenerative building block rectifier switches states via internal drain-to-gate feedback.

Synchronous half-bridge rectifiers coupled with a boost converter reduce heat loss and size while maintaining stability across varying power levels.

Controller switches power supply based on battery charge level, reducing annual power usage and extending battery life.

Dynamic biasing via a control transistor adjusts cascode voltages to expand the input voltage range while reducing power consumption in RF transceivers.

Square wave generation and PWM control maintain negative-electrode potential at ground level, preventing aging degradation in thin film solar cells.

A modular energy storage system uses coupling devices to bypass failed modules and maintain stable DC voltage output.

A power distribution module uses switches and a controller to dynamically allocate energy across output channels.

A high voltage regulator uses feedforward signals to adjust drive output based on monitored load current.

Processing circuitry monitors power quality and controls peripheral states to eliminate costly external monitoring equipment.

A bi-directional isolated power conversion device uses separate AC/DC, DC/DC, and isolation converters to manage electrical energy flow.

A power supply apparatus for LEDs uses a detector and voltage dropper to regulate current flow.

A single-stage AC power converter uses a multi-functional inductor to manage main and supplemental regulation.

Parallel power conversion sections share a single controller and sensor via coupled windings, eliminating communication errors.

Series resistance limits inrush current to a Zener diode, suppressing startup voltage rises while maintaining normal operation stability.

Voltage threshold detection devices and opto-isolators reduce power dissipation by 40% to 60% while maintaining signal integrity in harsh environments.

An auxiliary circuit energizes and de-energizes a drive circuit based on input power polarity, reducing power consumption during OFF times.

Dynamic circuit reconfiguration reduces conduction loss in direct current inputs while maintaining rated output power and suppressing harmonic currents.

A capacitor discharge circuit manages AC voltage detection using merged time-constant control and timer-based operations.

A power supply frequency determination device uses voltage detection means to monitor DC voltage ripple for AC frequency identification.

A resonant voltage converter switches secondary partial windings between series and parallel configurations to double the transformation ratio.

Active rectifier enable circuit detects AC current direction reversals to control DC-DC converter discharge phases in piezo vibration harvesters.

A power conversion system uses N converters with dual outputs connected in parallel to form multiple total output terminals.

A multi-winding power converter detects capacitor voltage to determine switching circuit states and manages power supply sources.