Frequency Measurement Arrangement TRIZ Cases

Electromagnetic induction from a detecting coil tracks switching frequency trends to predict power converter failure before faults appear.

A band-rejection filter in the generator voltage loop suppresses torsional-mode frequencies while preserving damping and stable excitation control.

A feedback loop forces TIA oscillation, and a frequency divider enables low-cost bandwidth measurement with standard production test equipment.

Periodic capacitance or inductance modulation lets a single LC resonator reach an exceptional point for ultra-sensitive perturbation detection.

Waveform-derivative peak detection determines power supply frequency in less than a full cycle, improving control response in fluctuating systems.

Multiple sensing coils and period counting cut jitter noise and power use while preserving fine moving-body displacement sensing.

Waveform-derivative sensing determines power signal frequency within a quarter-cycle, improving control response without waiting for a full cycle.

Power-spectrum correlation detects corrupted sensor signals, excluding crackling inputs to preserve noise-cancellation performance.

Power-spectrum correlation detects corrupted sensor signals and excludes them from noise cancellation to prevent crackling and preserve performance.

A common reference frequency and phase lets I/Q-based hop analysis measure frequency-hopping signals more accurately and verify device behavior.