帮我优化英文语法1 Check every power supply is off2 Connect the DC voltage source to pin J1 as shown in Figure 8 Pay attention to the polarity3 Connect the positive pole of the electronic load to pin P1 and th

Ensure that all power supplies are turned off.
Connect the DC voltage source to pin J1, as shown in Figure 8 (Pay attention to the polarity).
Connect the positive pole of the electronic load to pin P1 and the negative pole to pin P3.
Connect the auxiliary source to the VDD terminal P4 (Pay attention to the polarity).
Connect the signal generator to pin P5.
Turn on the auxiliary power supply, ensuring that the voltage ranges from 7V to 12V.
Open the signal generator and input the PWM signal with the required duty ratio and frequency.
Ensure that the initial input supply voltage is 0 V, then turn on the power and gradually increase the voltage to the desired value (do not exceed the absolute maximum voltage). Probe the switchnode and observe the switching operation.
Once the device is operational, slowly increase the load current based on the device specification's maximum temperature requirement. Do not exceed this maximum temperature