You'll need somwhat more than +14V for a generic 7812 to regulate correctly.
Also, remember the local (to the regulators) decoupling caps, or some of them make quite good HF oscilators! See the data sheets for the particular regulators used for exact details. Dave B. > -----Original Message----- ------------------ The supply provided by TAPR is a pretty basic unit. It would not surprise me if some were better than others. They also may work better on US mains voltage than they do on international voltages. I would rig up another supply and see what happens. That would at least rule out the supply as an issue. In a previous post the idea of putting a 7805 and 7812 regulator on the TBolt came up. If you have +14 available that seems like the best thing to try. Bob _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.