什么是电源
电源是一种将非稳压直流电压转换为稳压直流电压的装置。具体来说,就线性 LED 电源而言,电源是一个 LED 驅動器 利用线性稳压器调节输出电压。
线性稳压器是电源的一种,在通过元件的线性区域工作,以调节输出电压。它由各种元件组成,包括一个内部基准电压、一个误差放大器、一个反馈分压器、一个及通晶体管和一个输出电容器。
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内部基准电压是稳压器的参考点,使其能够比较预期输出电压和实际输出电压。误差放大器监控基准电压与稳压器输出反馈电压之间的差值。根据这一差值,误差放大器控制电源开关(通晶体管)调节输出电压,使其保持在所需值。
为了持续监控和调整输出电压,稳压器利用反馈分压器将部分输出电压提供给误差放大器进行比较。此外,电源电路中通常还包括一个输出电容器,以滤除输出电压中的任何噪声或纹波,确保为稳压器提供稳定、清洁的电源。 LED 照明系统.
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