Let me second Paul's question. I too am interested in the purchase of 2 of these boards and am happy to contribute funds in the advancement of this project. Shawn
On Thu, 2021-12-02 at 15:09 -0500, paul swed wrote: > 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 abit.I know there is also a earlier thread on this subject > 3-5 years ago.RegardsPaulWB8TSL > On Thu, Dec 2, 2021 at 11:15 AM Ulf Kylenfall via time-nuts < > [email protected]> wrote: > > Since the A15 regulator board is mentioned... > > I recently decided to try to improve the Voltage Regulator board > > A15inorder to use a better voltage reference than CR5 (9V) and > > alsosee if Icould 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 theoriginal design from the MagFieldcircuitry 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 > > masksilkscreen, plated holes etc.) but I did not opt for over- > > nightdelivery, so itwill 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 usingstandards available.If it performs well, the > > design will be placed into "public domain".Best RegardsUlf > > KylenfallSM6GXV > > _______________________________________________time-nuts mailing > > list -- [email protected] -- To unsubscribe sendan email to > > [email protected] > > To unsubscribe, go to and follow the instructions there. > _______________________________________________time-nuts mailing list > -- [email protected] -- To unsubscribe send an email to > [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
