This circuit is from a 1977 Radio Shack manual. The photocell is an LDR and the operational one is a 741. Components with non-standard values can be approximated.
Another of the many anti-bounce circuits that we have in this section of our website. This one...
This circuit is from 1980 documentation. We can exchange the BC177 for a BC557 and the TIP41 must...
This circuit is from 1999 documentation and the indicated power is PMPO for a load of 4 ohms. Two...