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The 106HVPS-6 SCR Style High Voltage Power Supply printed circuit board (PCB) is based on the old solid state high voltage supply used in later models of the GO/GOI Nuvistor radiation tools. This design was borrowed by Comprobe and used in countless tools they manufactured. It is a very simple, versatile, and economical design using a simple step-up transformer. It generates ample output for dual detector logging tools (dual gamma-ray tools, gamma-ray / neutron tools, etc.). The 106HVPS-6 is designed to operate with the old Corotron regulators or the new Codatron High Voltage Shunt Regulators. The PCB is jumper configurable to be compatible with either armor / chassis negative or armor / chassis positive line power. Frequency setting resistor R1 is turret terminal mounted for ease of selection or change on a fastened board. The semiconductors are ordinarily mounted in high quality machine pin sockets, but can be mounted directly to the PCB if low clearance is required. The 106HVPS-6 PCB measures 0.8 inches wide and mounts on two (2) inch centers.
The 106HVPS-6 High Voltage Power Supply PCB is part of the 106 Radiation Tool™ PCB family. 106 Radiation Tool PCBs can be used to upgrade or repair tools, or an entire electronics section can be assembled from scratch using several PCBs (as in reworking an old tube / Nuvistor tool). All 106 Tool PCBs use readily obtainable components, which parts will continue to be available for many years to come, and all use convenient turret terminals for wiring connections. We prefer through-hole components for PCBs designed to survive high temperature, but selected components may be surface mount (SMT) where price and/or availability is an issue.
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