Patent ID: 8446704

Claim:
A timing device without neutral line, comprising: a power input module, used to provide the electric power required for entire operations; an operation interface module, connected to the power input module in order to set up the time for providing electronic power; a MCU, respectively connected to the power input module and the operation interface module, receiving and reading the signal of setting time from the operation interface module, when it meets the timing, the MCU will output a driven signal; a first filter module, respectively connected to the power input module and the MCU and capable of receiving the driven signal from the MCU and filtering the signal; a SCR, respectively connected to the power input module and the first filter module and being non-conductive normally, and being conductive as the SCR received the signal from the first filter module in order to output the driven signal; a current rectifying module, respectively connected to the power input module and the SCR, receiving the driven signal from SCR and output a rectified signal after rectifying; a current limiting module, respectively connected to the power input module and the current rectifying module, receiving the rectified signal from the current rectifying module, and limiting the rectified signal flowing out; a triac, respectively connected to the power input module and the current limiting module, being non-conductive in normal and being conductive as receiving the signal from the current limiting module; a hot line input, respectively connected to a hot line point of a AC input; a second filter module, respectively connected to the hot line input and the triac, receiving a signal from the hot line input and filtering the received signal and further transmitting the signal to the triac; a hot line output, respectively connected to the triac and a hot line point of a AC output, in case of conductivity in the triac, receiving the signal, which is transmitting from the hot line point of the AC input, the hot line input, the second filter module, the triac to the hot line output, and entering into the hot line point of the AC output in order to allow the AC output provide electronic power.