| 摘要 |
A voltage level detector for use between a power supply apparatus and a functional circuit is provided. The voltage level detector includes a power input terminal, a voltage dividing circuit and a logic operation circuit. The power input terminal is used for receiving power of a first voltage. The voltage dividing circuit is used for dividing the first voltage into a second voltage having a level lower than that of the first voltage but greater than a threshold voltage. The logic operation circuit is integrated with the functional circuit and having a first and a second input ends thereof electrically connected to the power input terminal and the voltage dividing circuit, respectively. According to the voltage level detector of the present invention, a warning signal is asserted to the functional circuit when the second voltage level drops below the threshold voltage.
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