Open door alarm (CB26229E)

Details
Written by: Newton C. Braga

 

This alarm goes off if someone leaves a door open. We found it in the Encyclopedia of Electronic Circuits Volume 5 from 1995. The circuit uses components that are still common today.

 


| Clique na imagem para ampliar |

 

 

 

  

Latest

Circuit Bench

  • 1 MHz Low-Pass Filter (CB15638E)

      Signals below 1 MHz pass through this circuit, which is based on a high frequency operational...

  • Guitar Fuzz (CB16636E)

      We found this simple fuzz for guitars in a 1987 publication. It is interspersed between the...

  • Xenon Flasher (CB6657E)

           Found in a 90's EDN, this xenon pulsator uses a Sidac. We already used this setting in an article...

Buscador de Datasheets


N° de Componente