Transformers/Inductances Circuits TRIZ Cases
- Current Sense Transformer Opposing Windings for Accurate Breaker Sensing
Opposing primary winding turns create the target turns ratio without excess wire length, reducing heat, space limits, and sensing errors.
- MEMS Variable Inductor Structure for Tunable Inductance Control
Electrostatic MEMS motion changes coil and substrate spacing to tune inductance after fabrication for multi-band IC blocks such as VCOs and LNAs.
- Shielded Variable Inductor Layout for Interference and Q Control
A nested secondary inductor and voltage-controlled switch block external interference while tuning inductance and quality factor.
- Controlled Switching Device for Transformer Inrush Current Mitigation
A controlled switching device calculates optimal electrical angles to synchronize circuit breaker closing.
- Wireless Power Transmission Impedance Control
Dynamic impedance adjustment prevents voltage rises in reception circuits by adapting to phase-specific power consumption.
- Bidirectional Transformer Core Saturation Control
Hall sensors detect core magnetization to adjust excitation parameters, preventing saturation and overheating caused by inaccurate current-based detection.
- Self-Powered Wireless Current Transformer for Load Center Monitoring
A self-powered wireless current transformer harvests energy from monitored circuits to power microcontrollers without external wiring.
- Inductive Coupling for Electrical Storage Systems
A magnetic core with a detachable segment enables inductive coupling between power converters and energy storage cells.
- Voltage Transformer Resonance Elimination via Flux Linkage Control
A voltage transformer control device calculates zero-sequence flux linkage to trigger a silicon controlled rectifier loop for rapid resonance elimination.
- Contactless Power Transmission Overvoltage Protection Circuit
Overvoltage control circuit detects DC voltage exceeding preset threshold and activates switch protection to prevent downstream component damage.
- Overvoltage Clamping Circuit for Inductive Power Transfer
A clamping circuit redirects energy via a capacitor and switch to protect components from damage while maintaining efficient power transfer.
- Auxiliary Core Mid-Point Connection for Transformer Leakage Reduction
An auxiliary core with a median magnetic portion connects column midpoints, reducing magnetic leakage and losses while maintaining harmonic cancellation.
- External DC Component Compensation Circuit for Transformers
An external transducer circuit dissipates inductive direct current components to ground, eliminating complex retrofitting and semiconductor reliance.
- Wireless Charging Transmitter Merging Wall Adapter
A wireless charging transmitter merges the wall adapter into a single resonant power stage by providing rectified mains voltage directly to a half-bridge converter.
- Resonant Inductive Charger with Dynamic Frequency Tuning
Dynamic frequency tuning maintains power transfer efficiency across varying device positions.
- Power Starting Circuit Automatic Power-Off Control
A power starting circuit uses a double-pole switch and capacitor to control conducting states.