| 摘要 |
A brake alarm device integrated circuit is disclosed. When a high voltage is inputted into a first primary input, current flow through the first diode and then a positive bias will cause the second integrated circuit to light up a plurality of first LEDs. When a high voltage is inputted into a second primary input end, the first resistor will conduct the first integrated circuit. When a high voltage is inputted into the third primary input end, current therethrough and then the third resistor will conduct the third integrated circuit; a positive bias of the second integrated circuit will be suppressed to a low level. Thereby, the second integrated circuit will be actuated; then the first LEDs will extinguished; if the high voltage is stopped to input to the third primary input end, the first LEDs will light up. Thereby, different lights are used to represent different brake condition.
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