Read Amplifier

Summary: This document is a technical circuit schematic for a "Read Amplifier" board (G050) manufactured by Digital Equipment Corporation.

Key details of the schematic include:

• Circuit Architecture: The design features nine operational amplifiers (labeled E1 through E9) arranged in a grid.
• Components: The circuit utilizes a variety of resistors, capacitors, and diodes (specified as DEC6534B). The op-amps are identified as DEC5520.
• Power Supplies: The schematic indicates inputs for positive (+5V) and negative (-7V and -15V) power rails.
• Inputs/Outputs: The circuit handles multiple labeled signal paths, including differential inputs (e.g., ALI/ANI, BDI/BFI, BNI/BRI) and ground connections.
• Standard Specifications: A note on the bottom left specifies that unless otherwise noted, resistors are 10kΩ/4W 5%, capacitors are 10μF/100V 5%, and all transistors are DEC6534B.