This 1970s RCA circuit can be triggered by light or dark, depending on how the LDR is connected. The controlled load depends on the triac.
This circuit was sent by our longtime collaborator, Adriano Muniz Moura – Pirapora-MG. The...
This circuit was obtained from documentation from the 90s. The solution that can be found...
This transistor tester circuit is a little more sophisticated than the previous two (CB18918E and...