Intensity Amplifier W682

This document is a technical schematic for the "Intensity Amplifier W682," a circuit designed by Digital Equipment Corporation in 1969. The schematic details the electronic components and signal paths required to drive intensity control, likely for a display monitor or oscilloscope system.

Key features of the schematic include:

• Logic and Inputs: The circuit utilizes a DEC7400N integrated circuit (E1) to process control signals, including "Z-Signal J," "Z-Select L," and "Z-Direct Input D."
• Signal Output: The output stage is designed to drive an intensity signal ("U Out") using an 80V power supply regulated by a transistor (Q1) and a series of diodes (including D13, D15, and D17).
• Components: The design specifies values for various resistors, capacitors, and diodes, and includes a conversion chart for transistor and diode types used within the circuit.
• Purpose: The circuit includes connections for an "Auto/Man" switch and a "Brightness Pot Slider," indicating it serves as an interface between digital logic control and analog brightness adjustment.