Automatic and Control of the Street Lights

As discuss in Article 15.0 , street lights are controlled automatically by a photo electric control device. The same street lights can also controlled manually pressing an electronic push controlled switch similar to the discussed in Article 16.0.

By associating the Photo Electric Control and the Remote Control Switching where discussed in Article 15.0 and 16.0 respectively, street lights can be controlled automatically and manually

The circuit for automatic and manual control of street lights is shown in figure above (A). A single pole double throw switch S is coupled between the RCS and the PEC.

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By switching switch S at AUTO position, the street lights will automatically controlled by sunlight striking the photo resistor PR. Refer to the detailed explanation at Article 15.0 .

By switching Sat MAN position, the PEC will be rendered useless in controlling the street light. It is now the RCS that will control the street lights manually by pressing the push button switch PB momentarily. Refer to the detailed explanation of the RCS in Article 16.0 .


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