Question: Q . 4 Draw the schematics for interfacing a single pole double throw ( SPDT ) relay with microcontroller ( AT 8 9 C 5

Q.4 Draw the schematics for interfacing a single pole double throw (SPDT) relay with microcontroller (AT89C51) with the help of a Bipolar Junction Transistor and write a program in assembly language that will keep the relay coil energized for half the time and de-energized for half the time. Assume a reasonable time delay
 Q.4 Draw the schematics for interfacing a single pole double throw

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