power supply

nitin Chouhan's picture

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Joined: Aug 04, 2016

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power supply
August 4, 2016 - 8:06pm

Hello...
sir which power AC/DC supply need to apply for 4 way traffc control system....

Abhishek's picture

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Joined: May 19, 2015

Replies: 403
You can use 5v - 12v DC power
August 5, 2016 - 5:52pm

You can use 5v - 12v DC power supply depending on your project or use 9v general purpose battery, its easily available.

Guangyu's picture

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Joined: Oct 20, 2016

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4 way traffc control system
October 20, 2016 - 5:57pm

4 way traffc control system  uses 8051 microcontroller ( AT89C52) , 7-segments and LED’s for indication. The LED’s which was used as lights was connected to the Microcontroller by means of common Anode configuration. In this configuration the Microcontroller PCB was used to sink the current from the LED to its ports. That means logic 0 signal in the Microcontroller switches the LED ON and logic 1 signal switches the LED off. Here we are using 6 MHz crystal for the 8051 Microcontroller operation and you can use upto 12MHz crystal with this controller.