Intercom (CB22181E)

Details
Written by: Newton C. Braga

 

This wired intercom circuit was found in an English publication from the 80's. The integrated circuit can be replaced by an equivalent, just like the transistor which is a general-purpose type.

 


| Clique na imagem para ampliar |

 

 

 

  

Latest

Circuit Bench

  • TTL Logic Tester (CB13785E)

      We found this configuration in a 1974 technical documentation. It can test both TTL logic circuits and...

  • Car Reminder (CB15062E)

      This circuit emits an alert sound (interval beeps) if the car lights are left on and the ignition key...

  • Wiretapping Amplifier (CB19339E)

      This is an amplifier that uses a pickup coil placed next to the telephone set and the listening is done in...

Buscador de Datasheets


N° de Componente