QuadTech introduces five collections of archived application notes. These collections are a compilation of application notes that provide resources for test engineers, quality engineers, test equipment operators, and those involved with the development and manufacturing of electronic products. The EST collection details how and why the most common electrical safety tests should be performed, testing terminology, discussion of procedures, operator safety issues, and information related to agency test standards. The LCR Collection provides an overview of inductance, capacitance, resistance, and other impedance parameters, measurement circuits, mathematical equations, connection considerations and tips to get he most accurate results. The Components Collection discusses the measurement of electrical properties on components such as capacitors, inductors, sensors, transducers and other electronic devices. The Materials Collection explores the measurement of dielectric constant and loss for solid and liquid materials, including the test fixture cells used for contacting these materials. The IEC 60601-1 Collection provides information on the structure of this medical electrical equipment standard.