Sprague TO-3 Tel-Ohmike calibration

This article discusses repair and calibration of the Sprague model TO-3 Tel-Ohmike Resistor-Condenser Analyzer.    Serious electrical voltages are present, repairs should only be attempted by a qualified technician. Copyrighted by Bob Putnak, all rights reserved. Model TO-3 Tel-Ohmike “Capacitor Tester” is based on the older Sprague design.It is a balanced-bridge design with the following specifications: […]

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