Multifunctional electronic watch timing socket circuit

The working principle of the circuit : the plug is connected to the mains, VT1 and VT1 are turned on, VT2 and VT3 are turned off, and
the LED lights up, indicating that the "timer off" socket has power. When the electronic watch alarm clock sounds the time,
the signal derived from its piezoelectric ceramic chip passes through C. Coupled to VT. Amplify, and then use VD.
After rectification, C2 is charged. When the voltage on c2 is greater than 1.4 V, VTz and VT3 are saturated and turned
on, K acts, the LED goes out, the "timer off" socket is powered off, and the "timer on" socket is powered on
. These two sockets can be used to easily set the "timer on" and " timer off" of home appliances.