Tech Notes     DLPS vs. Ground Block     Why a ground block is not surge protection     SCR's vs. Sidactors     How Sidactor technology is an improvement over SCR’s         What is a transient ?         What is a Joule ?    Joules are an important specification for power protection         Types of surge suppression devices        Protecting 20A outlets with the PLS-125P     Using the PLS-125P to protect 20 amp power supplies.     Voltage Let Through     Definition and comparison of voltage let-through What is 6KV protection ?     Why is it inadequate ?