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Infrared-detection-devices
- 本设计主要由红外线传感器、信号放大电路、电压比较器、延时电路、音响报警电路、开机延时电路和电源电路组成。人体时时刻刻都在发射人眼不可见的红外波,但是可以被红外线传感器Q74接收,只是这个信号很小。经过前级三极管放大和后级运算放大器LM358放大之后,信号放大到足够大。在电压比较器LM393和延时电路的控制下,能够很好的实现,当有人出现在一定感应范围内时,探测防盗器自动报警。-The design mainly by infrared sensors, signal amplifier, volt
LMX331-LMX393
- LM393 ,四输入比较器芯片资料.方便与集成电路-LM393 datasheet
LM393Datasheet
- LM393芯片中文解释,详细介绍了LM393的管脚功能和测试电路,有很强的参考意义-LM393 chip Chinese explanation, detailing the LM393 pin functions and test circuit, has a strong reference for
c-Frequency-Counter
- 基于比较器LM393的频率计,通过单片机定时器可以测出频率值。-LM393 comparator-based frequency counter, through the microcontroller timer frequency can be measured.
alarm
- 可燃气体报警器QM-N5,所出的声音较小,可以试着把100UF电容调到2200UF。面包板上做过实验,可行。比较器用了LM393。-Combustible gas alarm, the sound is small, you can try capacitance transferred 2200UF.
LM339-393
- 循迹,火焰等相关PCB原理图。运用lm393-Tracking, fire and other related PCB schematics. Using lm393