首页|嵌入式系统|显示技术|模拟IC/电源|元件与制造|其他IC/制程|消费类电子|无线/通信|汽车电子|工业控制|医疗电子|测试测量
首页 > 分享下载 > 嵌入式系统 > 【通信应用笔记】继电器驱动保护

【通信应用笔记】继电器驱动保护

资料介绍
【通信应用笔记】继电器驱动保护
AN319
APPLICATION NOTE

RELAY DRIVE PROTECTION

INTRODUCTION
A fast switch-off in an inductive circuit causes overvoltages and electromagnetic interferences that can
damage peripheral elements. When a relay drive circuit is not protected, it is frequent to find some con-
tacts destroyed by the arc due to the overvoltage or failed transistors after initial use. Various solutions
exist which limit the voltage at the terminals of the switching circuit in order to prevent any damage.
There follow some examples.

PASSIVE COMPONENTS
Resistive network, capacitor (see circuit a, Figure 1).
This is an
标签:st通信
【通信应用笔记】继电器驱动保护
本地下载

评论