Abstract
A hybrid combination of electronic and magnetic amplifiers has been successfully and reliably utilized over the past five years in a variable, precision regulated, low voltage high current supply for a charged particle deflection magnet. Controlled current range is from 5–200 amp at up to 40 v. Despite the nonlinear impedance presented by the magnet's shielded coils, appropriate feedback loops permit an essentially critically damped 0.01% control response throughout the entire current range. As crucially reflected in the magnet's field, regulation and ripple are <0.01%.