Rex wrote: > Thanks. Great! Commonly available part.. I agree one part for both is good. > > > Rex
One caveat is the dc current flowing in the output transformer may cause too much distortion (actual specification on the data sheet is somewhat unclear/ambiguous), in which case capacitively coupling the output transformer and using an inductive shunt feed arrangement will cure this problem. Of course the ideal location for series tuned shunt traps (tuned to fundamental and say 4th harmonic) is from the output collectors to ground. These short unwanted harmonic currents to ground allowing a relatively simple low pass filter to be used to cleanup the output without contributing significant phase shift and associated tempco to the desired second harmonic output. The net dc current flowing in the input transformer secondary will be very small. Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.