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Anti-interference design of digital circuit

  • 2013-03-21
  • 4.85KB
  • Points it Requires : 2

1) Interference source refers to the components, equipment or signals that generate interference. It can be described in mathematical language as follows: du/dt. The place where di/dt is large is the interference source. For example, lightning, relays, thyristors, motors, high-frequency clocks, etc. may all become interference sources. (2) Propagation path refers to the path or medium through which interference propagates from the interference source to the sensitive device. The typical interference propagation path is conduction through wires and radiation through space. (3) Sensitive devices refer to objects that are easily interfered with. For example, A/D, D/A converters, single-chip microcomputers, digital ICs, weak signal amplifiers, etc.

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