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Recent content by zhujiu

  1. Z

    Series Resonance Real World Example

    I really do not know what do you want to ask? LC resistance offen used to design wave trap or launch electromagnetic waves. So it will be fun if you can describe your application scenario in your circuit design.
  2. Z

    I have a problem when I communicate with mfrc522 use Uart.

    Hi,all; These days , I am learnning rc522. Today , I did a simple test. I use Uart communicate with rc522. I want to read the value of the register 0x01.But I find the rc522 always returns the same number I send to it . As the picture above. When I want to read the value of the...
  3. Z

    [SOLVED] Why didn't oscillograph 2 have nothing.?

    . problem has been solved
  4. Z

    [SOLVED] Why didn't oscillograph 2 have nothing.?

    I think oscillograph2 should have same wave shape with oscillograph1.

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