PCB coil detector

The utility model provides a PCB coil detector comprising an operating bench. Inductive probes are installed on the operating bench, an output end of the inductive probes is connected with an input end of a clapp oscillation circuit, a sine wave generated by the clapp oscillation circuit is successively processed by an amplification circuit and a comparison circuit and then is input to a single-chip microcomputer, and an output end of the single-chip microcomputer is connected with an alarm. The detector can complete fault detection of all PCBs before multiple layers of the PCBs are welded and assembled, defective products are convenient to find timely, probability of failure products after assembling is effectively reduced, detection efficiency is improved, waste of components is reduced, and production cost is lowered.