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Controlling a Triac with a phototriac
This PDF book covers the following topics related to Triac : AC switching basics, Triac application, Triac control, Isolation requirement, Fundamentals of triac control with phototriac, Phototriac basic operating description, Phototriac limitations, Drive circuit principle, Improved drive circuit, Design guide, Static dV/dt, Electrical fast transient (EFT) immunity, EMI noise, Defining the drive circuit, Influence on voltage ripple and conducted noise, Overvoltage protection, Triac triggering with low power or highly inductive load, Snubber sizing: voltage and power rating, Conclusion.
Author(s): st.com
27 Pages 
TRIAC, from triode for alternating current, is a genericized tradename for an electronic component that can conduct current in either direction when it is triggered (turned on), and is formally called a bidirectional triode thyristor or bilateral triode thyristor. The DIAC is a diode that conducts electrical current only after its breakover voltage, VBO, has been reached momentarily. The term is an acronym of diode for alternating current. This PDF book covers the following topics related to Diac and Triac : TRIAC, Thyristor, DIAC, Silicon-controlled rectifier.
Author(s): Wikimedia
22 Pages
Controlling a Triac with a phototriac
This PDF book covers the following topics related to Triac : AC switching basics, Triac application, Triac control, Isolation requirement, Fundamentals of triac control with phototriac, Phototriac basic operating description, Phototriac limitations, Drive circuit principle, Improved drive circuit, Design guide, Static dV/dt, Electrical fast transient (EFT) immunity, EMI noise, Defining the drive circuit, Influence on voltage ripple and conducted noise, Overvoltage protection, Triac triggering with low power or highly inductive load, Snubber sizing: voltage and power rating, Conclusion.
Author(s): st.com
27 Pages