The Problem : The moment i switch on the Power Supply , the Voltage drops down to 3.5V at the power Supply and even if i try n increase the power Supply , it doesn't go up ( i used a 0-25 V variable Regulated Power Supply ). The motor however runs fine but a lot slower than itz rated speed.
Another problem is that the the Current reading at the o/p pins of the ULN2803 is 110mA which actually should have been 280 mA.
Why is this happening ? Whatz with the voltage drop at the power source ?