> -----Original Message----- > From: [email protected] [mailto:time-nuts- > [email protected]] On Behalf Of Pete Lancashire > Sent: Monday, November 28, 2011 3:25 PM > To: [email protected]; Discussion of precise time and frequency > measurement > Subject: Re: [time-nuts] 5087A Output Amp PC Boards > > I'm thinking starting from a blank PCB would be a good approach :-) > > On Mon, Nov 28, 2011 at 3:19 PM, J. Forster <[email protected]> wrote: > > You'd have to reverse engineer those. I doubt the forms & cans are even > > available any more.
If someone wants to start producing 5087A boards, that'd be great, but please don't reuse the original HP design. You can get much less noise and much better isolation with fewer (and cheaper) parts. A lot has been written on the list about this over the years, and it would be unfortunate if anyone building an isolation amp didn't review that material. -- john _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
