Triac photo control (CB8270E)

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.

| Clique na imagem para ampliar |

AC Triac latch (CB7237E)
This circuit is suggested by a 1965 General Electric documentation. The triac must be in...
Precision Current Monitor (CB3995E)
This circuit is from the 1990 Motorola Linear Databook. The integrated circuit used is the LF355,...
High Speed Buffer (CB4991E)
This circuit from an 80's publication also features low input capacitance. FET can be a modern...