Parameter Calibration/Setting TRIZ Cases
- Hybrid Circuit Breaker Trip Unit Using Digital Potentiometers
A hybrid trip unit combines an analog instantaneous circuit with a microprocessor to generate rapid fault protection signals.
- Digital Thermal Model Compensates CT Error in Solid-State Overload Relays
Independent compensation parameters adjust ultimate trip current and locked rotor time, reducing processing power while maintaining measurement precision.
- Appliance Temperature Monitoring with Cooling Mode Thresholds
A protective device switches to a cooling operating mode using distinct temperature thresholds for reliable appliance monitoring.
- Motor Device Temperature-Adaptive Over-Discharge Detection
A motor device adjusts over-discharge detection values based on environment temperature to stabilize battery operation.
- Control Relay Push-Rotate Wheel for Safe Parameter Adjustment
A push-rotate operating member adjusts relay parameters through a housing slot using a screwdriver.
- Arc Fault Detection Comparator with Variable Threshold
A comparator circuit uses a variable threshold voltage that tracks line voltage to distinguish arc faults from nuisance loads.
- Electronic Circuit Breaker Wireless Parameter Adjustment
Wireless communication sets tripping parameters in a compact circuit breaker, eliminating mechanical adjustment units.
- Trip Unit Remote Arc Reduction Mode Indication
Trip unit uses relay sequence and LED to provide remote indication of arc reduction maintenance mode, preventing safety risks from obscured visual indicators.
- UPS Power Distribution Selective Tripping via Electronic Control
Electronic tripping unit detects overload conditions and actuates circuit breakers, preventing voltage collapse across healthy load branches.
- Modular Power Distribution System With Electronic Breakers
A modular power distribution system uses a backplane and removable circuit modules to enable flexible configurations.
- Brown-out Detection Circuit for Switch-Mode Power Supplies
An optocoupler extracts voltage data from the primary side to detect brown-outs without loading the main flyback converter.
- Reconfigurable Microprocessor Trip Algorithms for Motor Circuit Breakers
Embedded algorithms analyze high-current fault waveforms to dynamically adjust trip points, reducing device complexity and cost.
- Flyback Converter Pin Multiplexing for Over-Temperature Protection
A flyback converter control circuit couples a thermistor to the current sense pin to detect temperature signals without adding hardware pins.
- Fault Protection Device Ground Trip Delay Bypass
A reclosing fault protection device detects partial bypass states and implements a ground trip delay operating state.
- Dynamic Current Threshold Control for EV Distribution Components
A current protection system adjusts power limits based on measured electrical load to manage stress on distribution components.
- Distribution Transformer Load Prediction via Data Segmentation
A predictive system segments and converts multi-source data into unified formats for transformer load forecasting.