You Can DIY! A 12-V Trigger Supply

This simple project provides a convenient method to remotely power audio equipment. Many manufacturers make audio equipment and power products that can be remotely switched with a low DC trigger voltage. With the trigger supply, my entire system can be turned on and off with one low-current switch. This article was originally published in audioXpress, November 2013.

Over the years, some of the best Nelson Pass projects have been featured by Audio Amateur and audioXpress magazines. The A40 power amp article was published in The Audio Amateur, 4/78, and the A75 power amplifier appears in The Audio Amateur 4/92 and 1/93. His other works are posted at passdiy.com. Originally published by audioXpress on May 2010.