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.
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
In the circuit shown in the figure to the side, the relay is activated when the light stops...
With this name, the English publication where we found this circuit indicated a sensitive touch...