Half-Bridge Resonant Tank Phase Measurement Using Bi-Polar Sampling

The patent replaces expensive and delicate phase measurement components with inexpensive, robust passive input circuitry that samples coil current during both positive and negative polarity states. This approach uses simple voltage sampling and binary comparison rather than sophisticated measurement equipment, achieving accurate phase detection through cost-effective, durable components.

The patent substitutes complex arithmetic processing with a simpler logic-based approach using passive circuitry. Instead of using computationally intensive methods to determine phase, the system employs straightforward voltage sampling, binary comparison, and logic operations to achieve phase measurement, reducing device complexity while maintaining precision.

The patent employs periodic sampling of the coil current during both positive and negative polarity states of the resonant tank. By systematically measuring voltage at specific points in each polarity cycle and comparing these periodic samples through binary logic, the system achieves accurate phase determination using simple passive circuitry without compromising measurement precision.

The patent introduces an intermediary approach where passive input circuitry samples the coil current voltage and uses binary comparison logic as a mediator to determine phase information. This intermediary sampling and comparison mechanism translates complex phase measurement into simple binary state detection, maintaining precision while reducing device complexity.