The four types of light-controlled streetlight circuits introduced by Chen Ruqiao in the Dongying City Shengli Petroleum Power Technology School in Dongying City, Shandong Province are the control circuits that I have tried when I modified the street lamps of our school. They better solve the trouble of the manual control of the lights on the shifting staff and the daylighting and pulling, and avoid the phenomenon of long light that has been forgotten in the pull between the inadvertently.
The composition and working principle of the four kinds of electric components are realized by the method of driving the small V relay J by the bidirectional controllable v, and then driving the AC 22 adapter by the normally closed contact of the relay. The photo-electricity circuit Rds and the resistor R are connected in series, and the phase is developed. During wiring, it is necessary to note that the resistor R drawn from the controllable port g cannot be directly connected to the live line in front of the relay, because this will cause the power consumption of the power generation circuit to be large, causing the photosensitive electrons to be torn, especially in white. The side 5 is reduced by the light load value, the trigger current is increased, and the heat is more serious.
The light resistance is reduced and the controllable V is triggered.
J action pulls, its normally closed contact J, disconnects the contactor coil [, the contactor normally open contact disconnects the street light power, the light does not light. At night, due to the increase of the no-light resistance value of Rds, the trigger current decreases, so that V is cut off, J loses power back, Jl closes, the contactor coil is turned on, the normally open contact is closed, and the power supply of the path lamp is connected. The smart light is on.
Clever control circuit. Here, the control can be controlled without contact. The role of the switch. Relay J uses AC 22 . Therefore, it is connected in series to the AC input end of the rectifier bridge. If a DC relay or intermediate relay is used, it is serially connected to the controllable V anode circuit.
V alternating current is applied to the sub-piezoelectric circuit consisting of throwing, preventing and connecting in series by J step-down and bridge rectification. The n-pole trigger voltage of v is taken from 6. The upper part of the voltage is a current limiting resistor; For anti-interference capacitors, it is used to eliminate the night when lightning or lightning strikes. The critical state causes the jerk to shake and the light to flash. Normally closed junction mountain and 63 composed of [discharge circuit. At dawn, 6.: decrease, the pressure drop on it decreases, the controllable V is cut off due to the decrease of the trigger signal, J loses power, the normally open contact Jz breaks the contactor coil power supply, the contactor does not move, the light is off . When it is dark, Rd increases, and its pressure drop increases, V turns on, J moves, and the light is on. When there is a clever electric power at night, although the buckle, the resistance value is reduced, but because of the capacitance; already charged, it can maintain the ¥ continue to conduct, always charged, the street light will not flash. J does not move during the day, J, coincidence, the discharge circuit is turned on, and the residual power is released.
DC voltage. During the daytime 63. The resistance value is reduced, the pressure drop is less than 1.6V, the 8778 is not conducting, the relay J does not operate, and the street light is off. At night, the resistance increases, the pressure drop on the base is greater than 1.6V, 87 is turned on, J moves, and the light is on.
The capacitor is used for lightning immunity.
Sleepy 4 is a control circuit composed of composite pole tubes. The working process of this circuit is similar to that of Figure 3 except that the trigger voltage of the composite tube is about 1.4V.
The four types of circuits are used, and the effects of Figure 2 and Figure 3 are better. In order to save energy, the above four types of circuits neutralize the light control circuit. The DC power supply of the circuit is regulated by transformer step-down, bridge rectification, and voltage regulation at the terminal. The contact capacity depends on the number of control street lamps. If 20 is selected, the control/100 bulbs can be controlled to about 4.
The single- and two-way controllable dolls can select any of the trigger currents of 34.
The photoresistor R can be selected from any of a variety of bright and dark resistance differences.
DC J selects 12V as type 4098. The rest of the parameters are shown in the figure.
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