AN3168非绝缘可控硅/可控硅控制电路

AN3168非绝缘可控硅/可控硅控制电路

AN3168
Application note

Non-insulated SCR / Triac control circuits

Introduction
In alternating current applications the direct current power supply for low-voltage electronic
devices (MCU, LEDs, optocouplers, Triacs and so on) can be provided using one of several
different circuits. There are traditionally two major types of power supplies used in
appliances, capacitive power supply and linear power supply using a step-down transformer.
Today, designers are using more and more switches mode power supplies (SMPS) to