The problem can be seen in this typical thyristor phase-control response plot (Fig. 1, curve A). Here, 80% of the thyristor rms output range (0.1 to 0.9 of full scale) is spanned by only 55% of ...

This SCR phase control works much like the common TRIAC dimmer, but has numerous advantages including increased current capability, robustness and absence of minimum voltage “snap-on.” A complementary ...

Circuit diagrams often show transistors in switching circuits. For an ideal NPN transistor, the switch-on voltage at the base is typically 0.6V (acceptable range is 0.6V to 0.8V).

Originally published in the August 18, 1988, issue of EDN. The control circuit in Figure 1a allows you to manually adjust the power delivered to a load. By changing the setting of potentiometer R 3, ...

America Semiconductor, LLC announced the 50RIA Series of medium power, phase control thyristors.