应用与设计

50W 白光 LED 车前灯驱动器

详情介绍

概览

产品详情

Precision Absolute Value Circuit

绝对值电路起全波整流器的作用。正输入电压导致第一个放大器充当一个具单位增益的反相器。第二个放大器再次对该输出进行反相,以产生一个正输出电压。负输入电压使第二个放大器的正输入朝正向移动,达到一个数值为 2/3Vin 的电压。由第二个放大器以 3/2 的增益对此电压进行放大也将产生一个与输入电压相等的正输出电压。

工具及仿真模型

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

LTspice