Impellimax, founded in 1986, designs and manufactures a wide range of hybrid circuit drivers for microwave control devices. It offers a wide range of products, including diode switch drivers, obsolescent components and transfer-function linearizers for attenuators and sensors. The company also manufactures gallium arsenide monolithic microwave-integrated circuit switches and attenuator drivers. Impellimax also designs and builds direct current subassembly units that include dual output low- and high-speed switch drivers, amplifiers, detector diode bias circuits, comparators and filtering supplies. The company offers a wide range of services, including hybridization, virtual tweaking, and drivers and diodes testing. It is a supplier of commercial, military and space-related devices for various companies, such as Raytheon, Hughes Missile Systems, E-Systems, MITRE, BAE Systems and Alpha. Impellimax is located in Nashua, N.H., and offers direct drop-in replacements for hard-to-find components.