A go/no-go load box from Associated Research, the TVB-2 allows production engineers and test specialists to verify the failure detectors of all AR electrical safety test instruments before performing hipot, insulation-resistance, ground-bond, and ground-continuity tests. Used daily, the TVB-2 offers a quick and simple means of checking the functionality of the electrical safety tester.
The TVB-2 employs resistors of varying types to induce a pass or fail condition, depending on the test parameters that are set in the electrical safety tester. Eight banana jacks located on the top of the box can be used to apply the corresponding load to the output of the tester. When all connections have been made, just press the TEST button to begin the test. The trip setting may vary up to 10% of the set value based on the combined tolerances of the instrument and the components used in the TVB-2.
Dimensions of the test verification box are 7.3×5.75×2.95 in. (186×146×75 mm). The unit weighs just 1.55 lbs and operates over a temperature range of 32°F to 104°F (0 to 40°C).
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.