Pulse transformer dotted terminal recognizer

The invention relates to a pulse transformer dotted terminal recognizer. A signal generation unit of the pulse transformer dotted terminal recognizer generates excitation signals with the frequency corresponding to the work frequency of a transformer to be measured. An isolation drive unit amplifies the excitation signals according to the voltage requirement of the transformer to be measured. The transformer to be measured outputs signal and conducts sampling and shaping, response signals are formed after isolation is conducted, and the response signals are sent to an analysis indication unit. The analysis indication unit judges a dotted terminal of the transformer to be measured according to the response signals and the excitation signals and displays the judgment result. Due to the analysis indication unit, operators do not need to have theoretical knowledge or observe the winding direction of a transformer coil, the operators can recognize the dotted terminal of the transformer only by conducting implementation according to the operation method of a specification, and operation is easy. Display is achieved through light-emitting diodes of the analysis indication unit, the requirements for personnel and devices are lowered, no ampere meters or other auxiliary instruments are needed, the dotted terminal is directly displayed by making an indicator lamp show different colors according to the recognition results, and the judgment speed is greatly increased.