At 04:29 PM 6/29/2010, David G. Dixon wrote: > > Wouldn't the 18V PS max be a hinderance in many cases? > >I don't see why. I'd just power it off the positive rail. Not following you. AC couple all signals? Remember, if your VCO pulse output is +/- 5V and you AC couple a narrow pulse, the the signal is nearly 0V to 10V. Ian