- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358668 > AN4009 (飛思卡爾半導(dǎo)體(中國)有限公司) ALARM IC SAMPLE APPLICATIONS PDF資料下載
參數(shù)資料
| 型號： | AN4009 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | ALARM IC SAMPLE APPLICATIONS |
| 中文描述： | 報警集成電路示例應(yīng)用程序 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 207K |
| 代理商： | AN4009 |
2
WATER LEVEL DETECTOR
A single probe connected directly on the detection pin of the
Alarm IC provides a portable solution for water level detection.
When liquid enters in contact with the probe, the resistor be-
tween the detection pin and the supply drops from an open cir-
cuit to a measurable value. With an appropriate choice of
bridge resistors, the presence of liquid will trigger the
comparator. The logic level can be connected to any monitor-
ing system allowing pump starting, floodgate closing and oth-
ers. This simple system is useful for numerous applications,
such as swimming pool water level alarms, defrosting water
level detectors, and in–house flood alarms.
–
+
VSUPPLY
PROBE
P15
P13
LOW BATTERY
DETECTION
ALARMIC
LED
PIEZO–HORN
LOGICAL
Figure 3. Water–Level Detection Example
MOTION INDICATOR
The Alarm IC can be used to detect motion and can be inte-
grated into products, such as an ordinary clothes iron, where
this is critical. Used with a low G accelerometer and a few logic
components, the device can signal the user that there is a risk
of clothes burning during use and that the iron must be shut
off from the AC power after use. At the output of the accel-
erometer, a simple peak detection circuit is required to keep
the signal active long enough.
When no movement is detected, the output comparator is
low and the counter starts. A first “beep” is heard after a few
seconds to advise that there is a risk of clothes burning. If no
movement is detected, the counting continues and drives a
flip–flop connected to pin 15 of the Alarm IC. The alarm is trig-
gered and will continue on until a new movement is detected,
resetting the counter.
–
+
VSUPPLY
L
A
P15
LOW BATTERY
DETECTION
ALARMIC
LED
PIEZO–HORN
LOGICAL
Figure 4. Motion Indicator Example
LOGIC
BLOCK
INCLUDING
COUNTER
GATES
FLIP–FLOP
–
+
FILTER MONITOR
An ideal solution for air cleanliness control is provided when
the Alarm IC is directly connected to an MPX5000 series pres-
sure sensor. This sensor family is compensated in tempera-
ture and has its output signal directly exploitable (internally
amplified). Therefore, the sensor can be connected to the
detection pin of the circuit without any additional component.
When a certain level of dust affects the efficiency of the filter,
a differential pressure is measured and the Alarm IC compara-
tor is triggered.
–
+
VSUPPLY
MPX5XXX
SERIES
P15
P13
LOW BATTERY
DETECTION
ALARMIC
LED
PIEZO–HORN
LOGICAL
Figure 5. Pressure Change (Filter) Example
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ARP2805D/SF | 1-OUTPUT 150 W DC-DC REG PWR SUPPLY MODULE |
| AS1977-T | nPower Single Comp. Open-Drain; Package Type: SOT23-5 |
| AS1976-T | nPower,Single Comp. Push-Pull; Package Type: SOT23-5 |
| AT45D161 | 16-megabit 5-volt Only Serial DataFlash(16M位 5V串行數(shù)據(jù)閃速存儲器) |
| AT45DB161 | 16-megabit 2.7-volt Only Serial DataFlash(16M位 2.7V串行數(shù)據(jù)閃速存儲器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN-400A | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Low-Power Green-Mode PWM Flyback Power Controller |
| AN400-N04 | 制造商:SMC Corporation of America 功能描述:Silencer, pneumatic, general purpose, 1/2 in. NPT port, 30dB |
| AN-402 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad 150 MHz Rail-to-Rail Amplifier |
| AN4025 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Implementing a Glucometer and Blood Pressure Monitor Medical Devices |
| AN4030 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MA31750 - Use of samples |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。