Ac-Dc Conversion Without Reversal TRIZ Cases

Electronic switch disconnects series regulator input from rectified AC mains, reducing power dissipation and enabling compact system-on-chip integration.

Switching charge current values resolves the trade-off between rapid capacitor charging and reliable short-circuit detection in high-density inkjet printing.

Schottky diodes suppress reverse current to maintain stable DC phase voltage during generator pre-excitation, preventing start-up delays.

Segmented chambers with dedicated cooling fans allow selective operation, reducing unnecessary power consumption and extending fan motor lifetime.

A PFC controller uses integral gain compensation to manage high pulse load current in buck-boost power circuits.

Dual antennas enable parallel power accumulation, reducing startup time and proximity requirements for vehicle key systems.

An integrated circuit manages transistor switching using dedicated terminals for power supply and detection voltages.

Magnetic coupling transfers differential voltage to a resonant secondary circuit, eliminating asymmetrical measurement errors in power transmission lines.

Replacing passive diodes with active switches in the rectifier eliminates forward voltage drops, reducing power losses and heat generation.

A protection circuit samples peak DC voltage to trigger X capacitor discharge when AC power disconnects.

A resonant AC-to-DC converter uses an inductor-capacitor circuit tuned to the fundamental frequency to boost input voltage for rectification.

A power controller lowers the first voltage converter output to 15V during outages, extending backup time without larger capacitors.

Stacking 3-phase AC-DC power supply outputs in series cancels low-frequency harmonic ripple through destructive interference of phase-shifted voltages.

A transformer uses an external resonant winding to enable zero voltage switching without adding extra magnetic components.

Dual detectors identify the AC supply range and switch a voltage multiplier, preventing damage from incorrect manual settings.

A power conversion apparatus uses a control device to stop switching specific elements during defined periods within the AC voltage cycle.

Startup circuit detects AC input status to activate a discharging path only when needed.

Segmenting the resonant converter into parallel units reduces conduction losses and component stress while preserving zero voltage switching.

Segmented switched mode power supply modules isolate low voltage switching from high voltage generation to reduce AC ripple and improve repairability.

Dynamic inductance compensation eliminates coordinate conversions and sector judgments, reducing mains current distortion from 17.2% to 1.4%.

Thyristors and resistors limit inrush current during startup, reducing component stress and system weight.

An integrated AC line filter rectifier module combines EMI filtering and rectification using low forward voltage rectifiers.

Curved V-shape voltage multipliers minimize heavy electrical insulation by smoothing electric field gradients, enabling lighter portable x-ray sources.

Auxiliary passive circuit generates reactive current to eliminate switching losses and reduce electromagnetic interference in electric vehicle power systems.

A power supply circuit uses segmented LED states to visually confirm rated power delivery through a self-test feedback loop.

Sequential route activation prevents high inrush currents that damage switches during grid connection.

A circuit determines control signal values using the voltage difference between floating grounds to enable analog signal transmission.

Dynamic substrate selection circuits adjust transistor potentials to suppress leakage current and reduce voltage drop during full-wave rectification.

Dynamic threshold adjustment resolves the contradiction between detection sensitivity and accuracy during balanced power failures.

Replacing mechanical relays with semiconductor switches eliminates switching noise and reduces circuit volume while enabling high-speed object detection.

A hybrid DC bus regulator switches between transistor packs and diode or SCR packs to manage power conversion paths.

A two-terminal current controller regulates LED current using dynamic mode switching based on voltage thresholds.

Carrier signal control shapes average inductor current to maintain sinusoidal waveforms.

Master control units delay internal current signals to match shared paths, stabilizing parallel power supply output amplifiers.

Segmented power processing minimizes energy loss by routing only a fraction of total load power through the auxiliary stage for precise voltage regulation.

A power converter rectifier circuit switches between full-wave and voltage doubler modes to maintain stable DC output.

Active blanking control prevents boost operation during zero-crossings, reducing bulk capacitor size and improving power density.

An RC differentiator circuit generates short duration current pulses to drive light emitting semiconductor devices.

Feedback circuit balances energy sharing among parallel switching power supplies with different reference voltages without signal lines.

Variable rectifying and discharge duties raise the virtual DC link voltage, resolving the trade-off between high modulation factors and control complexity.

Rectifier circuit supplies operating voltage to inverter driver circuits, eliminating isolated power supply complexity.

A multilevel rectifier uses a self-balanced flying capacitor to generate five-level voltage output without external balancing circuitry.

Analog circuits process signals before digital control to reduce processing delay and improve accuracy in high-frequency power factor correction systems.

A switching power supply bypasses active power factor correction circuitry at low operating points to conserve energy.

A self-oscillating flyback controller IC in a 3-pin package regulates output current and voltage using regenerative feedback.

An adaptive resistor gradually changes resistance during output voltage mode transitions in switching power converters.

Measuring dead time duration allows the controller to adjust switch on-time, maintaining input current proportionality and improving power factor.

Switching circuit selects high-impedance path for startup then low-impedance path to reduce power consumption after capacitor charging.

A power converter controller regulates auxiliary output voltage by monitoring supply voltage and adjusting primary side switch on-times.