| 摘要 |
The invention relates to fire warning. The heat fire alarm device comprises a microcontroller, an output signal shaper, a unidirectional conductance element, a current and voltage limiter, two condensers, two output terminals as well as a resistor and a light-emitting diode. It comprises the additional second resistor and other connections between elements, so the light-emitting diode performs a reference voltage shaper function. In the proposed heat fire alarm device is reached an error reduction of the device. |
