This circuit was found in a 1967 RCA manual. The transistors are of the time. The adjustment is made to read 7.15 V on the charged battery and the charging current is 3.2 A.
This is another of the Star Trek red alert circuit that you can find on this site. We took this...
This step was found in the 1960 Mullard transistor reference manual. The transistor can be a BC558...
We found this circuit in the November 1975 issue of Radio Electronics magazine. It uses a digital...