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EPM7032AETC44-7 Price

How to detect phototransistor

In Electronic Infomation Category: H | on April 19,2011

Phototransistor detection can be checked from the appearance near the pipe key (raised) or a longer pin is the emitter e, far away from the tube or shorter, another key pin is the collector c. Wrap the tube with a black cloth, with a multimeter R 1 k files, two tables pen is the reverse of two pins each measuring time, the value should be measured are infinite. For the NPN-type tube, the red pen then emitter e, then the black pen collector c, remove the shade cloth, this time should be right Biaozhen deflection, resistance from the infinite to the direction of the small resistance to the 15 ~ 35 k deflect about is illustrated in phototransistor is normal. Deflection angle increases, the sensitivity is higher. If there is no deflection Biaozhen resistance is still infinity or zero, indica...

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EPM7032AETC44-7 datasheetEPM7032AETC44-7 suppliersEPM7032AETC44-7 Price

ARM-based distributed monitoring system of urban water supply station

In Electronic Infomation Category: A | on December 31,2010

As the municipal water system to provide security for the whole community of life and EPM7032AETC44-7 datasheet and the rational management of industrial water, water areas, water for reasonable protection of the important role is the lifeblood of the normal operation of the entire community. The various water stations throughout the water supply system is the core of the work the most part. Therefore, the urban water supply station monitoring system is especially important. the current monitoring system of urban water supply stations and EPM7032AETC44-7 price and more to MCU as the core, the external sensor data for A / D conversion access SCM, its accuracy is up to 12 bits, the data processed with the dot matrix display shows . MCU 8-bit CPU, which seems to require a higher field is slightly inadequate. Lower machine and EPM7032AETC44-7 suppliers and the host computer ...

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EPM7032AETC44-7 datasheetEPM7032AETC44-7 suppliersEPM7032AETC44-7 Price

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