Dark activated alarm with hysteresis (CB7868E)

Found in American documentation from the 90s, this circuit can be implemented with modern operational. The power depends on the load.

| Clique na imagem para ampliar |

Automatic Night Light (CB12662E)
This circuit, obtained in an American publication from 1978, causes a small 6 V incandescent lamp...
Constant Current Source 741 II (CB19948E)
More sophisticated than the one presented in the previous circuit, this unit has a grounded load,...
Random Noise Generator (CB4914E)
This circuit is from a Linear Technology integrated circuit manual from the 1990s. The circuit...