pull-down resistor

When to Use Pull-Up and Pull-Down Resistors for RS-485?

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When to Use Pull-Up and Pull-Down Resistors for RS-485?

Follow+Star Public Number, don’t miss wonderful content Source | Zhou Ligong The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, it is often encountered whether to add pull-up and pull-down resistors and what size of resistors is appropriate. Below we will analyze these issues in detail. Why are … Read more

Detailed Explanation of RS-485 Pull-Up and Pull-Down Resistors Selection

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Detailed Explanation of RS-485 Pull-Up and Pull-Down Resistors Selection

The RS-485 bus is widely used in communication, industrial automation, and other fields. In practical applications, we often encounter the question of whether to add pull-up and pull-down resistors and what size of resistors is appropriate. Below, we will conduct a detailed analysis of these issues. 1. Why Are Pull-Up and Pull-Down Resistors Needed? 1. … Read more