Yes, you can build a highly efficient automatic street light circuit at home using very few components. Even a newcomer in the field of electronics can build this circuit using very ordinary components such as transistors, resistors and a relay.
This simplest automatic street light circuit can be assembled quickly by newbie and installed for achieving the intended results. Built around a light activated concept, the circuit can be used for automatically switching ON and switching OFF a roadway lamp or group of lamps in response to the varying ambient light levels.
Referring to the 40 watt street light circuit diagram above, the panel voltage is regulated and stabilized to the required 14.4 volts by the IC LM 338. P3 is used for setting the output voltage to exactly 14.3 volts or somewhere near to it.
The light sensor used in the device is generally a photo sensitive resistor such as an LDR or photo sensitive semiconductor such as a photo-diode or a photo-transistor. What is the advantage of an Automatic Street Lamp System?
This above explained IC 555 based automatic street light circuit can be set up with the help of the following points: Replace R1 with a 1M preset. Keep its wiper fully towards the positive line. Cover the LDR with an opaque shield. Next, illuminate the area with the amount of light at which the relay changeover is required to take place.
All the presented circuits can be used for automatically switching a lamp ON during night time and OFF during day time. 2 What is the advantage of an Automatic Street Lamp System?
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