Tag Archives: diy intercom

Mini intercom by one ic op-amp

Schematic Diagrams      Comments Off on Mini intercom by one ic op-amp

This is mini size intercom circuit. It uses IC Op-amp number LM380 just one as a result can work already. When switch S1 stay in a position speaks loud show in circuit picture. The loudspeaker of mother station will perform to is microphone for drive op-amp. By change step up… Read more »

Mini intercom by one ic op-amp

Schematic Diagrams      Comments Off on Mini intercom by one ic op-amp

This is mini size intercom circuit. It uses IC Op-amp number LM380 just one as a result can work already. When switch S1 stay in a position speaks loud show in circuit picture. The loudspeaker of mother station will perform to is microphone for drive op-amp. By change step up… Read more »