reactor snubber to improve the recovery characteristics of a clamp diode used in a power switching circuit is provided with a secondary winding to permit saturating the reactor via a secondary current pulse in order to improve the turn on speed of the clamp diode the current pulse for saturating the reactor at turn on is preferably derived from a shunt snubber charging pulse or from an external generator synchronized to the turn off time of a power switching device in the switching circuit application_number US 31252681 A description reference is now made to fig3 of the drawings wherein like reference numerals represent the same or similar elements as shown in the prior art circuit diagram of fig2 the snubber circuit has been modified by the addition of a secondary winding 14a on the core of reactor 14 which winding 14a is connected in series with the diode 15 in typical power switching applications such as choppers and inverters the switching frequency is usually high enough to maintain continuous current flowing in the load 11 and in some applications may be several thousand cycles per second when switch 12 is on current flows through the source 18 load 11 and switch 12 and increases toward some maximum value determined.