step up/down power transformer

A step-down transformer is a transformer that lowers the voltage. General appliances will use the step-down transformer to 220 v electric, step-down to the working voltage of electric equipment, generally used in LED outdoor lighting engineering, medical equipment, security monitoring, packaging machinery, automation equipment, audio amplifiers, stepper motor, water purifiers, nc machine tools, UPS power supply, mist maker, humidifier, measuring equipment, electric door, cable television, recreational equipment, etc.

Toroidal isolation transformer: Safety -- the secondary of the isolation transformer is not connected with the earth, and the toroidal isolation transformer's output is "floating ground". When people touch any line of the secondary of the isolation transformer, they will not get electric shock because they cannot form a current loop. Prevent power electronic devices from polluting the power grid - transformers have a great attenuation effect on high-frequency harmonics, so power electronic devices can avoid polluting the power grid.