Top » Design Support My Account  |  Cart Contents  |  Checkout            design support   call our engineering hotline We can build to print, work in conjunction with your engineering team, or completely custom design a product to your exact specifications. For samples at no-charge, as well as providing courtesy CAD drawing. Please call our Engineering Hotline at 1.800.645.5828 or email us at Engineering@rencousa.com. Easy to use downloadable Renco Design Forms: Power Transformer Design Form Switchmode Transformer Design Form Current Transformer Design Form Common Mode Choke Design Form Inductor Design Form Toroidal Power Transformer Design Form   EMAIL INFO Engineering VIEW DISPLAYS Surface Mount Thru-Hole