Q-Tran manufactures electronic components, such as toroidal transformers and power supply centers, for low-voltage lighting fixtures. It also makes ballasts, power units, lighting power supplies, and low-voltage power supplies. The company was established in 1993 and is owned by its officers. Founder and CEO John Tremaine started the business after entering his family's lighting business more than two decades earlier, establishing his own lighting design practice in 1980, and opening a lighting showroom in 1985.

Revere Electric Supply distributes electrical and electro-pneumatic products to customers through three locations in Illinois. Its Holt Electric division, which dates back to 1892, has a store in Wisconsin. Its Complete Industrial and Electric division is an electrical distributor and motor repair firm with two locations in Illinois. The company sells to the electrical construction, water and wastewater, hospital, and other industrial markets. Customers include government agencies, contractors, and original equipment manufacturers.

CyberOptics Corporation supplies optical process control sensors and inspection systems that are used to control the manufacturing process, and to ensure the quality of electronic circuit boards manufactured by its customers using surface mount technology (SMT) in the United States. The company operates in two segments, Electronic Assembly and Semiconductor. The Electronic Assembly segment engages in the design, manufacture, and sale of optical process control sensors and inspection systems for the electronics assembly equipment market. Its SMT systems product line consists of stand-alone measurement and inspection systems used in the SMT electronic assembly industry for process control and inspection. The Semiconductor segment engages in the design, manufacture, and sale of optical and other process control sensors and related equipment for the semiconductor capital equipment market. It also engages in the manufacture and sale of sensors that assist with yield improvement, and the placement and transport of wafers during semiconductor fabrication. This segment's product portfolio comprises waferSense sensors, wafer mapping and alignment sensors, and frame grabber products and machine vision subsystems. The company sells its product to manufacturers of electronic circuit board assembly equipment, manufacturers of semiconductor DRAM memory, semiconductor capital equipment manufacturers, and end-user electronic assembly manufacturers. CyberOptics Corporation markets its products through direct sales, independent representatives, and distributors. The company was founded in 1984 and is headquartered in Minneapolis, Minnesota.

Dave Carter & Associates company distributes a diversity of electrical equipment, plumbing supplies, and building materials for the home. For those who call the open road home, Dave Carter also supplies a full slate of recreational vehicle parts and equipment. Its catalog includes air conditioning and heating systems, carpet pad, doors, drywall, fans, lighting fixtures, mini-blinds, plumbing supplies, skylights, and wire. Customers are served through some 20 branch locations crisscrossing the US. Founded in 1977, the company is owned and operated by its founder and chairman David Carter, Sr.

Gennum's got the goods to hook you up with the internet, high-definition television, or e-commerce. Gennum company designs, develops and markets high-performance semiconductor products and intellectual property (IP) cores. These optical, analog and mixed-signal devices, and IP, aim to ensure that signals used to transmit video and data maintain their original integrity. Products are used in networking, home entertainment and broadcasting, and data communications. Gennum company primarily caters to video broadcast, data communications, consumer connectivity, and IP markets. Major OEM customers include Avago Technologies, Cisco Systems, Panasonic, and SONY.

Knowles offers a growing range of micro-acoustic, electro-mechanical, and related technology platforms to support the business potential of our customers. These platforms enable us to collaborate early in the concept-design process to help our customers develop smaller, higher density, higher performance products. Knowles has manufactured in Asia since 1974, with world-class facilities in China and Malaysia. All of our manufacturing facilities are ISO-9001 certified, with some additionally certified to ISO-14001 or OHSAS-18001. The Knowles Quality Management System ensures design, integrity, efficient manufacturing and the cost effective on-time delivery of our products and services. Knowles is owned by the Dover Corporation, a diversified manufacturer with $6 billion in annualized revenue from operating companies that manufacture specialized electronics, industrial products and equipment.

Premio, Inc. provides contract manufacturing services, including the design and assembly, testing, and support of products ranging from computers to medical equipment. The company markets its own line of built-to-order desktop and notebooks PCs, servers, workstations, along with third-party peripherals. It sells to customers in the business, education, government, security, and surveillance markets.

Unidym, Inc. manufactures carbon nanotube-based ink and conductive film products. It holds licensed commercial rights to nanotube technology. The company’s portfolio includes patents and patent applications claiming the nanotube compositions of matter and general manufacturing techniques, such as chemical vapor deposition synthesis, plasma chemical vapor deposition synthesis, purification, solubilization, separation of tubes, coatings, functionalization, and manipulation. The company’s technology is applied in flat panel displays, touch screens, light emitting diodes, and solar cells. The company was formerly known as NanoPolaris, Inc. and changed its name to Unidym, Inc. in July 2006. As a result of the acquisition of Unidym assets by NanoPolaris, Inc., Unidym's name was changed. The company was founded in 2005 and is based in Sunnyvale, California. Unidym, Inc. operates as a subsidiary of Arrowhead Research Corp.

Established in 1976, Western Switches and Controls, Inc. has locations in Arizona and California. Western Switches and Controls (WSC) distributes electrical, electronic, and automation components and equipment, such as bar code readers, circuit breakers, sensors, enclosures, light-emitting diodes (LEDs), transformers, solenoids, relays, heaters, and -- of course -- switches. The company principally serves manufacturers, including those in the pool and spa business. WSC offers a radio-frequency identification (RFID) development kit for manufacturers, using RFID products from Precision Dynamics. Co-founder and CEO Leo Alonzo owns part of Western Switches and Controls.

Duchossois Industries company, pronounced "deshy-swa," focuses its investment interests in the consumer products, technology and services sectors. The Chamberlain Group, a subsidiary, is the world's top maker of residential and commercial door openers and a leading maker of access control products. AMX Corporation performs systems integration, while other companies offer AV equipment, Internet-based access control, and lighting products. DII also owns an early-stage IT venture capital fund and holds a minority stake in horse racetrack Churchill Downs.

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