HOLE SWITCH IN WIRELESS TERMINAL

摘要

PURPOSE: A hole switch in a wireless terminal is provided to adjust the sensitivity of a switch, without the necessity of changing magnets or adjusting the distance between a magnet and a magnetic substance, in case that the model of a switch in a folder-type or flip-type terminal is changed. CONSTITUTION: A magnet(110) generates a uniform magnetic field as the distance with a hole sensor(120) gets changed by the opening and shutting of a flip. The hole sensor(120) generates a voltage according to the intensity of the magnetic field inputted in proportion to the distance with the magnet(110). The voltage generated from the hole sensor(120) is inputted to the amplifier(130). The amplifier(130) amplifies and outputs the voltage generated from the hole sensor(120). The comparator(140) compares the signal outputted from the amplifier(130) with a reference voltage and generates a low or high signal. A variable power part(100) generates the reference voltage and outputs it to the comparator(140).