Ac-Dc Conversion Without Reversal TRIZ Cases

A discharge unit achieves substantially linear discharge of the energy storage unit, reducing voltage jumps and acoustic noise during pulsed operation.

Controller compares calculated electrostatic energy with detected voltage to identify sensor faults in injection molding drive circuits.

Placing a chopper circuit on the AC side eliminates high-voltage DC switch requirements, reducing costs while stabilizing frequency during faults.

A differential protection device uses a single electrical energy accumulator sub-module to store fault current energy from multiple detection modules.

Segmented switching waveforms isolate reverse energy flow paths to prevent destructive voltage spikes across main transistors during boost mode operation.

A switch controller manages burst mode off periods to reduce switching loss in power supplies.

A single comparator detects oscillating voltage edges via a secondary winding to trigger reduced switching.

A modular multilevel converter control system generates separate positive and negative arm voltage commands to suppress circulating current oscillations.

A supply rail mirror circuit balances positive and negative power rails using a high-frequency transformer.

Shore hardness 50 or lower material holds windings away from the magnetic circuit, reducing acoustic noise transmission by 5 to 15 dB.

Active EMI filter cancels high-frequency noise across 150 kHz to 30 MHz bandwidth, eliminating bulky passive components.

Two-stage regulation circuit manages input voltage to eliminate catalog number proliferation and reduce heat generation in wide-range applications.

A power switching system uses zero-cross detection to control a single switching device for induction heating loads.

Segmenting voltage across series switches reduces conduction losses while a coupled inductor eliminates common-mode EMI noise.

A PWM controller power limiter flattens the limit signal via a delay counter to prevent startup failures during low-line voltage conditions.

Line-frequency synchronized switching reduces reactor volume and harmonic currents without high-frequency PWM complexity.

Adjusting nonaligned arm spacing minimizes magnetic interference and balances current distribution across parallel components.

A main circuit wiring member uses intermediate-potential layer conductors to enhance insulation between high and low potential conductors.

A leakage current suppression circuit uses impedance units to split and attenuate currents flowing through Y-type capacitors in AC-to-DC power supplies.

A load controller manages power supply to a heater using a switching device and an arc suppression circuit.

A secondary-side voltage doubler rectifier uses fewer diodes to double output voltage in multi-phase inductive energy transfer systems.

A multi-phase power converter processes bit streams via space vector modulation to generate actuation signals for semiconductor switches.

A power converter generates a phase reference signal from a DC bus voltage error to enable adaptive phase shifting.

Dynamic over-voltage-protection circuit monitors feedback voltage to shorten the switching device ON-period and prevent inductor buzzing.

Segmented switching via a transistor and thyristor eliminates parasitic oscillations and acoustic noise while minimizing microcontroller current draw.

A voltage-detecting unit and separating unit interrupt the electrical connection between a loop-shaped induction conductor and internal circuits.

A resonant isolated converter regulates output voltage without secondary-to-primary feedback signals.

Dynamic capacitor reconfiguration reduces inrush current while eliminating energy wastage from thermistor resistance.

A totem-pole power factor corrector current-sampling unit uses controlled switches to form distinct paths for magnetizing and demagnetizing currents.

An insulated AC-DC converter creates a narrow DC link voltage, enabling high-efficiency charging across wide battery ranges without converter losses.

A capacitive battery voltage detection circuit uses capacitor feedback to scale input signals for operational amplifiers.

Autonomous cell control circuits fix switching elements to an off state when voltage exceeds a threshold, preventing failures during communication errors.

Control circuit selects pulse width modulation and phase shift modulation to reduce semiconductor power loss during wide-range voltage step-down.

A converter control method determines DC voltage commands via estimated multi-phase voltage components in a rotating coordinate system.

A power converter uses feed-forward voltage compensation to adjust the feedback signal and activate the PFC circuit before 75 W input power is reached.

A rechargeable battery and noncoupled drivers enable an LED luminaire to switch between AC mains and DC power sources automatically.

Power supply units measure primary signal electrical quantities to regulate output voltage autonomously.

A power isolation circuit uses a charge store to switch modes and a second stage to filter intermediate voltage signals.

A reconfigurable multi-cell power converter uses switching circuitry to dynamically adjust cell connections between series and parallel topologies.

Segmented n-level power factor converter reduces common mode noise, enabling choke miniaturization without increasing switching loss.

Grounding stabilizes the electrical reference potential to improve energy absorption reliability while minimizing device complexity.

Bent air passages lengthen the airflow path within a compact housing, cooling heat-generating circuit elements without increasing device size.

Phase control limits current flow during peak voltage periods to reduce heat generation at the output transistor while maintaining consistent power levels.

A control circuit limits AC-DC converter input power using auxiliary winding voltage and inductor current sensing signals.

Periodic voltage switching reduces magnetizing coil heating and extends energizing circuit lifetime beyond 10 million events.

Cascaded T-type NPC inverter reduces conduction loss by merging H-bridge units and sharing components to minimize semiconductor diode count.

A solid state light source driver circuit dynamically switches between buck and boost converter configurations to regulate current delivery.

A flipping-capacitor rectifier circuit reconfigures capacitor phases to flip voltage across a piezoelectric energy harvester.

An active bridge system uses field-effect transistors to rectify power for powered devices.

An 18-pulse autotransformer rectifier reduces harmonic pollution in aircraft power systems by segmenting windings and applying a 40-degree phase shift.