On Wed, Aug 3, 2016 at 2:08 PM, David <davidwh...@gmail.com> wrote: > > I looked at the schematic and is seems feasible without excessive > effort. Either the existing simple series preregulator can be > modified or replaced allowing it to both charge the battery (through a > blocking diode) and power the instrument or a completely separate > power charging circuit can be added in parallel. >
The existing charging circuit _is_ in parallel with the pre-regulator; they are separated by CR5 and CR6 and the pre-regulator/battery outputs are combined by CR8 and CR9. The only problem with the existing circuit is with a fresh, strong, fully charged battery pack, charging pulses will leak past CR8 with only R1/C1 to filter them. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
