The delay switch circuit can be modified slightly to make an automatic control switch.
Light control switch circuit
The light control switch circuit is shown in Figure 4. The photosensitive element uses a 2cu type photodiode. The resistance value of the photodiode decreases as the light intensity increases. Adjusting the position of the R movable contact turns the transistor V1V2 on at a certain light intensity. The relay is pulled in. The electrolytic capacitor C acts as a delay to prevent the relay from operating unstable under critical conditions. R can adjust the critical illumination intensity value, the more the movable contact is up, the smaller the light intensity threshold of the light control switch is, the more sensitive the light control switch is (note that the movable contact cannot be placed at the lowermost end).
The light control switch can be used to control the electric light. If the normally closed contacts 1 and 2 are used, the control function of “day light off†can be formed. If the normally open contacts 1 and 3 are used, the control function of “lighting light†can be formed. .
Figure 5 temperature control switch circuit
The temperature sensing element is a kF-12 type thermistor. This type of thermistor has a negative temperature coefficient. Its resistance value decreases as the temperature increases. Adjusting the resistance of R allows transistor V1V2 to conduct when the thermistor is at a certain temperature value to cause the relay to pull in. The purpose of using the temperature control switch is reached. R can be set to a critical temperature value.
The temperature control switch can control the electric fan with its normally open contact. When it is hot, when the temperature rises to a certain value, the electric fan can be automatically turned on. The heater can also be controlled by a normally closed contact, which is heated when the temperature is low, and automatically turned off when the temperature is high.
In places where the requirements are not too high. Both the photodiode and the thermistor can be replaced by a triode 3A×81 or 3A×31 after the top of the case is removed. Especially the 3A×81 of the glass bulb scrapes off the black paint outside the glass bulb, and the photodiode can be replaced by the c and e poles. It is also possible to directly replace the thermistor with c and e poles. Before welding, you can use the multimeter ohmmeter to test the interpole resistance of the triode. You can adjust the light intensity (near the lamp) or the temperature (near the soldering iron), and choose the resistance value to change with the light and temperature.
A servo encoder slip ring is a specialized device that is used in conjunction with a servo motor to allow for the transfer of electrical power and signals between the motor and stationary components. The slip ring consists of a number of metal contacts that are arranged in a circular pattern, and it is typically mounted on the shaft of the motor. As the motor spins, the contacts within the slip ring make contact with corresponding contacts on the stationary components, allowing for the transfer of power and signals.
The primary benefit of using a servo encoder slip ring is that it prevents wear and tear on the electrical connectors that would otherwise be subjected to constant movement. Additionally, it can help to improve reliability and performance by providing a more consistent flow of power and signals.
It is specially developed for servo motor and servo motor encoder slip ring. It has the characteristics of small size, light weight, low power consumption, and long life. The inner diameter of the slip ring is only 10mm, which can be used in a small space. The service life of the slip ring is more than 100,000 hours, and the power consumption is only 0.5W.
A servo encoder slip ring is a device that allows an electrical current to pass between rotating and stationary parts of a machine. It does this by using a set of brush contacts that rotate with the shaft, while stationary contacts are mounted on the housing. This allows for uninterrupted power and data transmission in applications where the stationary component cannot be easily moved.
Oubaibo is a leading manufacturer and supplier of servo encoder slip rings. They produce high-quality products that are reliable and durable, and they specialize in slip ring 18 wire, and commutators. Their products are used in a variety of industries, including aerospace, defense, medical, and manufacturing.
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