Using the basic schematic, in the first rev, using Kelvin 50LE multimeters... no connection to DC side, no capacitor on DC side, just monitoring... 100:4 turn transformer over clamp magnetics. 10uF stupid cap removed. ..with 2SK932-24 x 4: 62mV @ 5.3mA -> 4.60V 45mV @ 2.6mA -> 2.07V ...with PMBF4391.215 -> No results??? try 2, no results. ...with PMBF4393.215 x 4: 117mV @ 8.3mA -> 4.66V 66mV @ 2.9mA -> 2.07V ...with MMBF5103 x 4 125mV @ 9.0mA -> 4.5V (Fail in general)