dc motor overheating the power supply

Hi, I have rechargeable fan which has a 9v dc motor inside. After the existing controlling circuit burned, I tried to run the fan directly from the fan's 9v dc power supply. But the rectifier diodes and transformer in the circuit overheats when the fan runs and some times the motor doesn't run itself. I tried to run the motor from another 9v dc adapter but the it ran very slow and after a while Transformers primary coil got cut. I even tried to run on 12v but it didn't run. What is the problem?

by eng_maruf
May 25, 2017

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