Ac-Dc Conversion Without Reversal TRIZ Cases

Shared return leads, polarity switching, and duty cycling let pedestal heater zones stay uniform without interfering with DC chucking.

Bent creepage paths in the voltage detector extend insulation distance to suppress discharge while keeping the voltage generator compact.

A controller holds a fixed DC voltage ratio across distribution lines so the secondary converter cuts load power use without sacrificing efficiency.

By setting switch on-duty from output current or power, this Class-E converter keeps zero-voltage switching without added voltage-adjusting parts.

A parallel passive pre-charge path cuts switch voltage steps, reducing common-mode interference and protecting power converter switches.

Compares converter output voltage signals to detect combiner wiring errors quickly when combiner-point voltage cannot be measured.

Dynamic space-vector rotation in parallel matrix converters cancels reactive power, enabling unit power factor and lower current ripple.

A compare circuit disables zero crossing detection when AC input nears output voltage, improving boost converter stability and reducing turn-on loss.

Charging a capacitor near rectified-voltage troughs lets this two-stage LED power circuit raise efficiency, simplify integration, and shrink storage parts.

Coordinated high- and low-voltage transistor switching cuts reverse recovery current and lowers rectifier switching loss.

Bus capacitor temperature feedback adjusts PFC output voltage to improve low-temperature start-up, efficiency, and power supply life.

Pre-charge or jump-start circuits let paralleled inverters build DC voltage before grid connection, cutting startup circulation losses and enabling load sharing.

A bridge-rectifier dimmer reverse-biases a single FET body diode and trims on-time with thermal sensing to cut cost and prevent overheating.

A soft-start LED power supply circuit uses optocouplers, a MOSFET, and capacitor pre-charge to prevent current overshoot during continuous switching.

Voltage-difference feedback switches the full-bus load to keep a three-level PFC half bus stable and prevent overvoltage in appliances.

Separate resonant tanks tuned near switching frequency cut switch stress and control complexity while supporting isolated bidirectional conversion.

Delayed switch control and power-on buffering protect a three-phase active PFC circuit from overvoltage damage and capacitor stress.

A controller and bi-directional driver switch AC signal direction and frequency to keep wireless power transfer reliable without wires.

Delayed neutral breaker opening after converter blocking lowers DC fault current, cutting switch rating needs and fault clearance time.

A replaceable DC/DC converter module linked to the AC/DC PSU improves airflow, cuts heat and noise, and simplifies cable routing.

MOSFET-based synchronous rectification cuts low-voltage converter losses by timing control signals for zero-voltage switching.

Real-time tissue response from a first staple firing is used to adjust the next firing, improving consistency across varying tissue conditions.

Five-output phase groups and Reuleaux polygon voltage phasing cut 115 V grid harmonics while keeping the ATRU compact and cost-effective.

Adaptive bleeder current shaping cuts heat loss while preserving full-time sinusoidal envelope tracking and zero-crossing detection.

A dual-path single-pin sampling circuit detects AC input and Vbus, enabling output regulation and input disconnection detection without extra pins.

A dual-auxiliary winding supply circuit switches controller power by output level, supporting efficient 3.3V to 24V isolated conversion.

Auxiliary switch control shifts converter switching behavior to suppress audible resonant noise while keeping output voltage stable.

A decoupling capacitor and added switch leg absorb double-line ripple in matrix resonant conversion while keeping sinusoidal input currents and constant output power.

Series power modules and parallel power units supply different DC loads without extra DC/DC stages, cutting conversion loss and cost.

A Scott-T transformer keeps voltage phases balanced so multilevel converters can continue stable power conversion during converter faults.