How Does The Hard Drive Motor Survive 20 Volts Without A Scratch?! 😲
The hard drive motor has four wires. A wire is considered common. With the help of speed control and server test, we can start a hard drive motor. This motor is started with 12 volts that it receives from the computer's power supply. But with the help of the power supply on the workbench, we enter about 20 volts into the circuit. The speed control circuit works with PWM, so these 20 volts will never enter the motor. But remember that speed control tolerates a certain amount of voltage. If the motor used requires a high current, use a speed control suitable for the motor current
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00:00 Open the hard drive
01:25 Find the hard drive motor common wire
02:11 Introduction of speed control
03:12 Introducing the server test
06:36 Turn on the motor and display the signal on the oscilloscope