Multiple Input And Output Pulse Circuits TRIZ Cases
- PFC Inductor Current Reconstruction for Low-Pin Converter Control
An emulation circuit reconstructs PFC inductor current from node voltage and sensed rectifier current, improving control with fewer IC pins.
- Substrate Bias Detection Circuit Using Frequency Comparison
Frequency comparison between boost and drop clock signals detects substrate bias voltage while cutting comparator count and power use.
- Electromechanical Connector Switching for Spark-Free Oxygen Power Mating
Current-limited connector mating with loopback-triggered bypass prevents sparks and circuit damage in elevated oxygen environments.
- Power System Frequency Detection During Phase Jumps
Predicted angular frequency and phase-jump switching help track grid frequency quickly while suppressing false detection during disturbances.
- Buck Converter Soft-Start Fault Detection for Feedback Wiring Defects
Comparator-based soft-start monitoring detects broken feedback paths or grounded outputs and disconnects input power before load or converter damage.
- DTMF-Addressed Coupler Box for Multidrop 1-5 V Field Devices
A DTMF-addressed coupler box lets multiple 1-5 V field devices share one PLC analog input while preserving signal isolation and cutting wiring.
- Multiphase Power Converter Sequential Switching for Overcurrent Control
Sequential enable signaling across converter phases controls switch timing and prevents overcurrent while maintaining stable output voltage.