This module allows the output to be switched between 1 and 2 seconds after being powered. During this time, the inrush current is damped by the 15W
Audiophonics - Softstart Module 230V 15A for Amplifiers
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DIY Class A/B Amp The Wolverine build thread, Page 85
Audiophonics - HYPEX Softstart module for amplifiers
DIY Class A/B Amp The Wolverine build thread, Page 85