Hallgeir Helland wrote: > > But tell me, should there not be a 10k resistor on the PNP version > as well? I built this circuit and added the extra 10k assuming that > it was an error. Have I put my foot in it then? I have never built this (I use my tester), but seems to make sense. -- Edu Silva -- ES2 Audio http://audiolist.cjb.net .