Summary This document is an electrical schematic for a -6V power supply regulator designed by Digital Equipment Corporation in 1969. The circuit utilizes a DEC7401 integrated circuit, various transistors (DEC6534B, DEC2904, DEC3790), and diodes (D662) to regulate voltage. The schematic includes component values, pin configurations, a transistor and diode conversion chart, and standard notes regarding component tolerances and proprietary usage rights.
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