Linear and solid relay

The utility model relates to a linear element for using an ac signal to control alternating current power. The input and the output parts of the utility model are mutually insulated, dc voltage and output ac voltage are linearly proportional to each other, and the stepless regulation of the load alternating current power can be carried out between 0 and 100 percent. The utility model is identical with a circuit symbol and the wire connection method of the traditional two-port ac solid state relay, double replacement can be carried out, and the utility model uniquely has the function of linear amplification.