Regarding the calculation of photoresistors, what is the left and right reception range of this phot

Summary. The resistance value of a photoresistor varies greatly depending on the model and illuminance. Generally, it is about 5K during the day and about 10 trillion ohms at night.

The resistance value of a photoresistor varies greatly depending on the model and illuminance. Generally, it is about 5K during the day and about 10 trillion ohms at night.

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Model 5506

Photoresistor 5506 is a type of photoresistor. The maximum voltage of the photoresistor 5506 is 150V, the maximum power consumption is 100MW, and the peak value of the residual spectrum is 540nm. Photoresistors are made of special resistors made of semiconductor materials such as sulfide or selenium barriers, and their working principles are based on the internal photoelectric effect.

The stronger the light, the lower the resistance, and as the light intensity increases, the resistance decreases rapidly, and the bright resistance value can be as small as less than 1K. Photoresistors are very sensitive to light, and when there is no light, they are in a high-impedance state, and dark resistance is generally reachable. The special properties of photoresistors and the development of science and technology will be extremely widely used.

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I choose BC. Because the temperature coefficient is negative, the resistance value of the thermistor decreases with the rise of temperature, and the resistance value can be directly measured by the meter, and the filial piety angle of the offset shield becomes smaller, and B is selected. The photoresistor is also the stronger the light, the smaller the resistance, then the light is weak, the resistance will become larger, and the meter declination will become larger, so choose C

Photoresistor, how much the resistance value decreases when exposed to light.

The resistance value decreases only because of the resistance characteristics, and its resistance value is related to the amount of incident light, but not to the voltage and current.

That is to say, it is obtained or discovered by experimenting in order to find a decrease in resistance.

The working principle of photoresistors is based on the internal photoelectric effect. A photoresistor is formed by attaching electrode leads at both ends of a semiconductor photosensitive material and encapsulating them in a tube shell with a transparent window, as shown in the figure. To increase sensitivity, the two electrodes are often combed.

The materials that make up photoresistors are metal sulfides, selenides, tellurides, and other semiconductors.

The resistance value of the photoresistor when it is not irradiated by light is called only slag (dark resistance), and the resistance when it is irradiated by the light beam is called (bright resistance).

Reference: Quietly.

Normal resistance, on-resistance.

A photoresistor is a resistor made by using the photoelectric effect of semiconductors to change the resistance value with the intensity of the incident light. This is due to the fact that the carriers generated by the light are involved in conducting electricity, and under the action of the applied electric field, the electrons rush to the positive pole of the power supply, and the holes run to the negative pole of the power supply, so that the resistance of the photoresistor decreases rapidly.

Determinants of the resistance of the photoresistor: the intensity of the light, the intensity of the incident light, the decrease in resistance, the weak incident light, and the increase in resistance.

The resistance of the photoresistor is determined byLightingThe stronger the light, the lower the resistance.

(1) The resistance value of the fixed value resistor is 60. 2) When no light hits the photoresistor, the ammeter indicates a.

Within a certain range, the relationship between the intensity of the incident light and the resistance of the photoresistor is (The stronger the light, the smaller the resistance

Description: Photoresistors are very sensitive to light, and they are in a high-impedance state when there is no light. The stronger the light, the lower the resistance, and as the light intensity increases, the resistance decreases rapidly.