Snubber circuit

A snubber circuit, wherein the snubber circuit is used in electronic equipment comprising:

• a pulse signal generator, a driving power source and a load;
• wherein the pulse signal generator is used to input a pulse signal to an input terminal of the load;
• the driving power source is used to input a driving current to the input terminal of the load;
• the pulse signal generates a noise due to an electromagnetic interference, wherein the snubber circuit comprises a current detection module, a control module and a snubber module;
• wherein the current detection module is connected to the driving power source, is used to detect the driving current of the driving power source, and comprises a photo coupler, wherein an anode of the photo coupler is connected to the driving power source, a cathode of the photo coupler is connected to the input terminal of the load, an emitter of the photo coupler is connected to an anode of a power source, and a collector of the photo coupler is connected to the control module;
• wherein the control module is connected to the current detection module and the snubber module and is used to adjust a center frequency of the snubber module according to the driving current detected by the current detection module;
• and
• wherein the snubber module is connected to an output terminal of the pulse signal generator and is used to filter the noise of the pulse signal.