KY-018 photoresistor module for Arduino AVR PIC (FS00178)
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Produs:Nou, Fără garanție
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Numar articol:143658228
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Disponibilitate:Indisponibil
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Preț:31,00 Lei
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Anuntul a expirat la:16.05.2019, 08:06
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Specificatii
1. Introduction
Photoresistor in our daily lives but also be able to see, is mainly
used in smart switch, giving our students Live brings some
convenience, but, in our daily electronic design will also be used.
Then in order to make better use,We have the appropriate module,
easy to use, and efficient.
2. overview
Photoresistors are semiconductor photosensitive devices, in
addition to having high sensitivity,fast response, consistent with
the spectral characteristics and value of good features, but at a
high temperature, and humidity in harsh environments, but also to
maintain
a high degree of stability and reliability, wide pan used cameras,
solar garden lights, lawn, detectors, clock, music, cups, gift
boxes, mini-Night light, light voice switches, lights automatically
switch toys and a variety of light control,light control lighting,
lamps and other light automatic opening OFF control field
3. main parameters and characteristics
1>. according to the spectral characteristics of the
photoresistor has three photoresistor: Ultraviolet photosensitive
resistance, infrared light-sensitive resistors,Visible
photosensitive resistance;
2>. the main parameters are as follows:
A>. dark current, dark resistance: photosensitive resistance at
a certain applied voltage, when the light is not irradiated when
the flowing Current is called dark current. Applied voltage and
dark current ratio as the dark resistance;
B>. Sensitivity: Sensitivity is irradiated by light sensitive
resistor, the resistance value (dark resistance) when irradiated
with light Resistance value (light resistance) the relative change
in values.
C>. volt-ampere characteristic curve.Voltage characteristic
curves are used to describe the resistance of the applied voltage
and the photosensitive photocurrent relationship,On the
photosensitive devices, the light current with applied voltage
increases.
D>. temperature coefficient. Photoelectric effect photoresistor
affected by temperature, at a low temperature portion photoresistor
photoelectric Sensitive high sensitivity at high temperatures is
low.
E>. rated power. Photosensitive resistor rated power is allowed
for certain lines in the power consumed when the temperature rise
High, its power consumption is reduced.
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