A STANDBY CIRCUIT WITH SUPER LOW POWER CONSUMPTION

摘要

A standby circuit with super low power consumption attaches to a commercial frequency transformer (T1). The said standby circuit is a four-port network. The inputs (X3, X4) of the four-port network are connected to the secondary winding of the commercial frequency transformer in series. The outputs (X1, X2) are connected to the primary winding of the commercial frequency transformer in series. The four-port network includes a detection and isolation sensor section (1), a signal amplifying and drive section (2), an electronic switch (3) and an impedance element (4).