This article discusses repair and my calibration procedure of the Precision model 10-12 tube tester. Serious electrical voltages are present, repairs should only be attempted by a qualified technician. Copyrighted by Bob Putnak, all rights reserved. Introduction The Precision Apparatus Company (commonly known as PACO) manufactured some very high-quality test equipment. Among their offerings are […]
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This article discusses repair and calibration of the Signal Corp I-177 tube tester. Serious electrical voltages are present, repairs should only be attempted by a qualified technician. Copyrighted by Bob Putnak, all rights reserved. Introduction Model I-177 is a very old US Military dynamic mutual conductance tube tester that was used during World War II
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This article discusses the solid-state B&K 607 / 667 tube testers. Both models use the same tube setup data book, and therefore both models are functionally equivalent. Model 607 will be example shown in this article. Electrical voltages are present, repairs should only be attempted by a qualified technician. Copyrighted, all rights reserved. This series
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This article will discuss Mercury tube testers. The Mercury Electronics Corporation of Mineola NY produced a number of tube testers in the 1960s. All models are small, portable, and lightweight. Popular models include 990, 1000 / 2000, 1100, 1100A, 1100C, 1101. Models and comments will be added as I find time. Electrical voltages are
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This article will discuss repair and calibration of the NRI Professional model 70 tube tester. High voltages are present, repairs should only be attempted by a qualified technician. Copyrighted, all rights reserved. Introduction Built by Precision Apparatus Co for NRI, the high-quality craftsmanship of the NRI Professional model 70 tube tester is readily apparent. It
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