Diacs and triacs are often used for control of ac lines and are seeing increasing use in Internet-enabled line switches. However, the traditional approach of modeling them using bipolar ...

Pre-regulators at the input of power supplies minimize losses. This version uses optical feedback from an LED and light-dependent resistor instead of the more common optically ...

If the application doesn’t demand a wide control range and low hysteresis, a simple variable light control may be designed using quadrac devices, such as the Littelfuse Q6008LTH1LED or Q6012LTH1LED ...