AC noise spike suppression circuit with parallel back-to-back fast diodes

摘要

An alternating current (AC) spike absorption circuit employs a pair of back-to back parallel high-speed ultra-soft recovery diodes with unique RFI prevention characteristics. Further high frequency noise suppression is achieved by using a high voltage parallel-connected capacitor and a plurality of series-connected parallel ceramic-type resistors which are formed by resistors having coil windings providing an equivalent circuit of parallel resistance and inductance. The inductance provides ultra high frequency rejection and the resistance provides damping of any ringing oscillation. A surrounding ceramic material casing of the ceramic-type resistors resists the transmission of radio frequency energy.