Digital Coded Keyboard (CB18722E)

Details
Written by: Newton C. Braga

 

We found this code key or coded keyboard in a publication from the 90s. The circuit uses components that are still common today and is powered by a 12 V voltage according to the relay used.

 


| Clique na imagem para ampliar |

 

 

 

  

Buscador de Datasheets


N° de Componente 

Circuit Bench

  • Shortwave Converter (CB24017E)

      This circuit is from a Radio Electronics from March 1970. The crystal depends on the frequency at which...

  • Clap meter (CB7494E)

           This circuit was found in a 1960 transistor manual from Sylvania. It measures the intensity of...

  • Mixer 741 (CB8987E)

          This audio mixer was found in an old American documentation. The potentiometers are 1M and the...

Latest