Full wave rectifier filter (CB7582E)

This circuit was found in a Popular Electronics from the 90s. The power source must be symmetrical and the operational amplifiers can be 741.

| Clique na imagem para ampliar |

Fish lure (CB21074E)
This circuit was found in an old American publication. The transformer is the type of output found...
Low current source (CB21990E)
This current source circuit with the CA3130 was found in a 1977 publication. The circuit provides...
Beacon for cars (CB18146E)
The project presented consists of a flasher alternated with relay, which can be installed at the...