Ever played the board's brother, can you please tell me, why the same attachment, with a figure of cuhk place for power supply, steering gear won't lock, but you can control, with a small circle of local power supply can lock the steering gear and control the

CodePudding user response:

You may have a look this board schematic diagram, you should be a small circle of power supply, not to "lock" function of the power supply, no schematic diagram, use multimeter circuit under test to VDD, should be able to judge,

CodePudding user response:

Power supply and a small circle, the circle small circle is even on the VCC directly, that goes through the circle should be SMD triode, and then after received VCC capacitor filter, the function of the triode is what?