Senba Sensing Technology Co., Ltd.

The function of the supercapacitor ups  is often determined in the first few seconds to a few minutes after the power failure or the instantaneous collapse of the grid voltage. The battery needs to provide power during this period. The shortcomings of the battery itself need regular maintenance and short life, so that the UPS is running. It is necessary to always check the state of the battery. In a data protection backup system, the time required by the UPS is relatively short. The advantages of supercapacitors are particularly pronounced, with output currents rising to hundreds of amps or even thousands of amps with almost no delay, and fast charging, energy storage in a short period of time, and 50,000 cycle life Do not need care for ten years, so that UPS is truly maintenance-free. Kamcap   has high-quality ultracapacitors for sale. To know ultracapacitor price of different types or if you want to buy super capacitor, please contact us via info@kamcap.com. Our differe...

Idr sensor （ photoresistor light-dependent resistor, and the latter is abbreviated as ldr）or photoconductor,is commonly made of cadmium sulfide, as well as selenium, aluminium sulfide, lead sulfide and bismuth sulfide. These fabricated materials have the characteristics of rapid reduction of resistance under the irradiation of specific wavelength light. This is because the carriers generated by light are all involved in conduction, and it will cause drift under the action of an applied electric field, and electrons run to the positive pole of the power supply, and holes run to the negative pole of the power supply, so that the resistance value of the idr sensor decreases rapidly. Usually, idr sensors are made into thin sheet structures to absorb more light energy. When it is irradiated by light, the electron-hole pairs are stimulated in the semiconductor sheet (photosensitive layer) to participate in conduction, which enhances the current in the circuit. In order to obtain high se...

1. Electronic photometry The photometer can be used to measure the brightness of people and objects, so as to help the photographer choose the appropriate exposure speed. The following is the schematic diagram of the electronic photometer. The ldr sensor  changes the intensity of light into the difference of resistance value, so that the brightness can be displayed directly by different currents flowing through the meter. Among them, R1 and R2 are used to adjust the surface calibration and W is used to control the sensitivity of the meter head. 2. Infrared thermometry The infrared light radiated by the measured object is modulated into 800Hz optical signal by a modulation disc with a filter, which is approximately sinusoidal wave. The modulated light entering into the idr sensor is converted into electrical signals and then sent to the FET amplifier for amplification. The output U0 can reflect the temperature. In order to reduce the influence of noise and temperature c...

The working principle of idr sensors is based on internal photoelectric effect. An idr sensor is formed by installing electrode leads at both ends of a semiconductor photosensitive material and encapsulating them in a shell with a transparent window. In order to increase the sensitivity, the two electrodes are usually made into combs. Semiconductors such as metal sulfides, selenides and tellurides are the main materials used to manufacture idr sensors. Usually, thin idr sensors and comb-shaped ohmic electrodes are fabricated on insulating substrates by coating, spraying and sintering methods. Leads are connected and encapsulated in sealed shells with transparent mirrors to avoid dampness affecting their sensitivity. When the incident light disappears, the electron-hole pairs generated by photon excitation will recombine, and the resistance of the idr sensors will return to its original value. When the metal electrodes at both ends of the idr sensors are applied with voltage, t...

Brief Introduction of Idr Sensors Idr sensor is a kind of special resistor made of special material, which has a rapid decrease of resistance value under the irradiation of specific wavelength. Its working principle is based on the internal photoelectric effect. It is very sensitive to light. With the increase of illumination, the resistance value decreases. In the absence of illumination, it presents a high resistance state. Using this characteristic, it can be widely used in making light-controlled switch circuits, as well as monitoring cameras, light-controlled toys, dimming circuits and indoor light control. The following pictures show the shape of idr sensors and the symbols of circuit diagrams. This is an idr sensor with two electrodes. The surface of the photoconductor is serpentine. It is similar to wireless communication circuit board antenna such as WIFI. This idr sensor is encapsulated in epoxy resin. It has the characteristics of small size, fast reaction speed, hi...

Idr sensor  has no polarity. It is purely a resistor device. It can be used with either DC voltage or AC voltage. Idr sensor is a photoelectric element made of semiconductor material and operated by internal photoelectric effect. Under the action of light, its resistance often decreases. This phenomenon is called photoconductive effect. Therefore, idr sensor is also called photoconductor. When a voltage is applied between the metal electrodes at both ends of the idr sensors, a current passes through it. When illuminated by light of appropriate wavelength, the current increases with the increase of light intensity, thus realizing photoelectric conversion. Semiconductors such as metal sulfides, selenides and tellurides are the main materials used to manufacture idr sensors. Usually, thin idr sensors and comb-shaped ohmic electrodes are fabricated on insulating substrates by coating, spraying and sintering methods, and then lead wires are connected and packaged in sealed shells w...

N on contact temperature measurement sensors The traditional body temperature measurement is a contact measurement using a mercury thermometer, which has the advantages of stable performance and small error, but has the disadvantages of long measurement time, high risk of cross-contamination, and easy to cause mercury poisoning due to glass breakage. Infrared ear thermometer is the most commonly used thermometer. It can test body temperature with a slight amount of forehead or ear, and it can also prevent body infection. Infrared ear thermometer collects infrared radiation from ear cavity and tympanic membrane through infrared sensor. And converted into a digital signal, the main control CPU unit converts the digital signal into a temperature value and displays it on the LCD screen. Compared with mercury thermometers, infrared ear thermometers have the advantages of high precision, high resolution, fast measurement speed, easy operation, safety and comfort. Now the country...

Security anti-theft solution With the continuous improvement of people's living standards, people's demand for family life comfort is getting stronger and stronger. People tend to consider the safety of home in the first place. This kind of smart home mainly consists of visual intercom door machine and various detectors. The composition is connected to the smart home management machine. Once the burglar alarm pir sensors   button is triggered, the smart home receives the signal and performs as an alarm to remind the user. The highest level of consumer acceptance in the smart home market is undoubtedly the security system, a complete security system including alarm system, video surveillance and video intercom. After years of experience, the solution is applied to human body infrared sensor products. It is strongly recommended that you use the following models. As one of the most professional pir sensor manufacturers  in China, Senba  Sensing Technology Co...

Overview All of Senba products in this Catalog reach ROHS standard. The EU ROHS Directive refers to the European Union's directive 2011/65/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment. We are the specialist PIR sensor manufacturer for more than 15 years  and we have advanced passive infrared technology . Feature Custom design is available. Higher in cost-performance Long range Wide angle Technical Data 1.Maximum Ratings Characteristics Symbol My. Value Max. Value Unit Remarks Working Temperature UNTIL -30 70 °C Storage Temperature TST -40 80 °C Max.current for pin Into -100 100 mA Viewing angle X=110° Y = 90 ° Detection spectral response L 5 14 μm 2.Working Conditions (T=25℃， Vdd=3V，Except other requirement) Characteristics Symbol Min. Type Max. Unit Remarks Supply Voltage V DD 2.2 ...