This circuit is from 1968 documentation. We can assemble it with more modern components such as a common LDR and BC558 transistors, driving lamps from 6 V up to 50 mA. The power then goes to 6 V.

This circuit is from 1968 documentation. We can assemble it with more modern components such as a common LDR and BC558 transistors, driving lamps from 6 V up to 50 mA. The power then goes to 6 V.