I'm upgrading some elements for next years display and I had an idea for centralizing my DC power with a large power supply. Then I can power everything and have some extra capacity for future upgrades. I don't know the differences between a Magnetic Transformer and a PWM power supply. This is a link to a unit that has a built in timer I can set for my show times, and I don't need to build a weatherproof enclosure. http://www.lowes.com/pd_90952-53027-EE0002BK_4294795203_4294937087_?productId=3069637&Ns=p_product_prd_lis_ord_nbr|0||p_product_qty_sales_dollar|1&pl=1¤tURL=%2Fpl_Landscape%2BLighting%2BAccessories_4294795203_4294937087_%3FNs%3Dp_product_prd_lis_ord_nbr%7C0%7C%7Cp_product_qty_sales_dollar%7C1&facetInfo= I haven't seen any posts with people using a similar setup. A large landscape lighting transformer seems quite simple, and they are an off the shelf option from a home improvement store.