G084

This is an electronic schematic for a Digital Equipment Corporation (DEC) Magnetic Tape Read Amplifier, model G084.

Key points:

• Purpose: Intended solely for test and maintenance, as the circuits are proprietary.
• Copyright: Copyrighted in 1967 by Digital Equipment Corporation.
• Date Drawn: April 5, 1967, by M. Haller.
• Components: The schematic details numerous transistors (e.g., DEC 3009B, 6534B), diodes (e.g., D662, D664, IN753A), resistors, and capacitors.
• Component Specifications: Default specifications are provided for resistors (1/4W, 5%), diodes (D664), and transistors (DEC 65348) unless otherwise indicated. A conversion chart to EIA equivalents for transistors and diodes is also included.
• Power Rails: The circuit operates across multiple voltage rails, including +10V, -6V, -12V, and -15V, in addition to ground.
• Additional Information: It references a parts list (A-PL-G084-0-0) and includes a revision history.