8 Best Capacitive Discharge Units for Turnout Switch Machines (April 2026) Detailed Reviews
A capacitive discharge unit is an electronic device that stores electrical energy in a capacitor and releases it as a high-current pulse to power solenoid-based turnout motors in model railroads. I’ve spent the last three months testing various CDUs on my HO scale layout with 23 turnouts, and the difference in reliability is remarkable. Before … Read more