LAMP TIMER USING A RADIO FREQUENCY

摘要

PURPOSE: A lamp timer using a radio frequency is provided to extend the life time of a battery by supplying the power to the lamp timer by converting an alternative current to a direct current. CONSTITUTION: A lamp timer comprises a power circuit(8) for converting an alternative power to a direct power. A relay output circuit(10) intermittently controls a power switch(11). The relay output circuit(10) is connected to the power switch(11) in a row. A setting switch(7) is provided for setting the on/off time of the lamp and a cancel signal and a present time. A time displayer(6) displays the present time and the on/off state of the lamp. A battery backup switching circuit(9) preserves the on/off time and the switch condition. Signal receiving circuits(2,3,4) are provided to receive high radio frequency signals from a remote controller. A microcomputer(5) is provided to control the operation of the circuits.