Can I read Electronic Card-Lock Circuit Design on EtoBox?

Electronic Card-Lock Circuit Design by Chirag Mistry is a document available to read on EtoBox.

What is Electronic Card-Lock Circuit Design about?

This circuit can be used as an electronic cardlock system to control access to electrical appliances. When a card with a punched hole in a specific position is inserted, it allows light to pass through to a particular phototransistor, enabling the corresponding output of an IC. This output then turns on an LED and energizes a relay to power the associated appliance. The system also produces a musical tone while the card is inserted. Different cards can selectively activate different appliances based on the

Author

Chirag Mistry

Language

EN