Automatic light switch (CB7050E)

The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger one burns out. The loads depend on the triacs.

| Clique na imagem para ampliar |

Burglar alarm (CB7428E)
This circuit was found in a Popular Electronics from the 90s. The components used are all common...
Overload Alarm (CB6082E)
This circuit is from a 60's documentation. The circuit uses components from the era and serves to...
Divide-by-5 Using the 4018 (NI005E)
One pulse in the output is produce at each 5 pulses applied to the input. The circuit uses CMOS...