Intercom with telephone (CB7829E)

Details
Written by: Newton C. Braga

 

    Old phones with dials can be used in a simple home intercom system, as this circuit from Popular Electronics from the 90's shows.

 


| Clique na imagem para ampliar |

 

 

 

  

Buscador de Datasheets


N° de Componente 

Circuit Bench

  • Remote potentiometer (CB8326E)

           This circuit came out in a 60s RCA documentation. The circuit uses common lamps and LDRs but can...

  • Headphone Amplifier (CB4386E)

            Found in a 1964 magazine, this is a small headphone amplifier from 500 ohms to 10 k ohms (magnetic...

  • Band Pass Filter (CB6246E)

          This filter was found in old Raytheon documentation. The circuit makes use of operationals of the time, but...

Latest