1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Breakdown Voltage - per MIL-STD-202, Method 301.
4. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
5. This resistance value is for 11.81mm wire length. Resistance changes when wire lengthens.
6. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II).
7. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202.
8. For custom modifications to the wire length or size, or adding a special connector, please contact Littelfuse.
Sensitivity Options (Using 57070 Actuator)
Select Option
Switch Type
S
T
U
V
Activate Distance–D
mm (inch)
Average
Activate Distance–D
Activate Distance–D
Activate Distance–D
Pull-In
Pull-In
Pull-In
Pull-In
mm (inch)
mm (inch)
mm (inch)
AT Range
AT Range
AT Range
AT Range
Average
Average
Average
1
2
3
Normally Open
High Voltage
Change Over
12-18
--
15-20
15-20
8.4 (.330)
--
6.5 (.255)
6.5 (.255)
17-23
17-23
20-25
20-25
6.6 (.260)
6.6 (.260)
4.9 (.193)
4.9 (.193)
22-28
22-28
25-30
25-30
5.1 (.200)
5.1 (.200)
3.7 (.146)
3.7 (.146)
27-33
27-33
--
--
4.0 (.157)
4.0 (.157)
--
--
4 Normally Closed
Note:
1. Pull-In AT Range: These AT values are the bare reed switch AT before modification.
2. The activation distance is average value on the final sensor assembly.
今天调程序老师出现这样的错误，
想知道是怎么回事
Error: VHDL error at keyb12_11.vhd(82): can't infer register for signal "tem_press" because signal does not hold its value outside ......
语音作为自然的人机接口，可以使车载导航系统实现更安全、更人性化的操作。通过国内外车载导航系统的功能对比可知，支持语音交互是车载导航系统的一个发展趋势。另外，市场信息服务公司J.D Power and Associates的调研数据也表明，56％的消费者更倾向于选择声控的导航系统。因此，开发车载语音导航系统是很有意义的。目前，国内已经具备开发车载语音导航系统的技术基础，特别是文语转换TTS技术...[详细]
嵌入式系统
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