THE STORY BEHIND the A75 power amplifier continues. In Part I, we discussed its origins and direct predecessor, the Pass A40, as well as some general guidelines to follow before initiating such a project. We covered such topics as MOSFETs and differential pairs. In this concluding part, we will analyze the amplifier's component parts in depth, beginning with the source. The Power Supply Figure 11 shows the amplifier's power supply circuitry. AC line power enters through the power cord and passes through fuse F1. To reduce the effects of inrush current, thermistor TH1 is employed. At room temperature, this will… More...
Here are some great project-submissions folks wanted to show-off. They don't directly correspond with a single PassDIY project, but we still fealt like they should have a home. Great work everyone! More...
Copyright © 2016 Pass Laboratories, Inc. All rights reserved
Telephone: 530.878.5350