Ulf I would have replied off list. Are you intending to sell blank PCBs? I was recently thinking about the same thing as I watched the cfld move a bit. I know there is also a earlier thread on this subject 3-5 years ago. Regards Paul WB8TSL
On Thu, Dec 2, 2021 at 11:15 AM Ulf Kylenfall via time-nuts < time-nuts@lists.febo.com> wrote: > Since the A15 regulator board is mentioned... > > I recently decided to try to improve the Voltage Regulator board A15in > order to use a better voltage reference than CR5 (9V) and alsosee if I > could reduce the drift and noise of the Magnetic Field winding. > After some experimenting, I am reasonable satisfied. > > The board has been completely redesigned. > > The drift and noise of the +20V is reduced. Thermal driftcompared to the > original design from the MagField > circuitry is also reduced significally. > > Modern thru-hole components are used facilitating manual assembly. > A total of 10 PCB's have been ordered (Double side, solder masksilk > screen, plated holes etc.) but I did not opt for over-nightdelivery, so it > will be another couple of weeks for them to arrive. > I will assemble a board for myself and, unless covid makes itimpossible, > take the 5065A to my former employer and evaluatethe performance using > standards available. > If it performs well, the design will be placed into "public domain". > Best Regards > Ulf KylenfallSM6GXV > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.