Collection

All time great archives!

Bifocal Electronics

Order Form

Please note! Postal charges FREE if ordered in India. Outside India, add flat Rs.1500/- for International Postal Charges. For any query please contact us.

Filed Under: Bifocal Electronics, Uncategorized

As you may know, there are three types of timer circuits: ON delay timer, OFF delay timer and the PERIODIC timer. Here is the circuit of OFF delay timer using IC 555. Circuit diagram Working When supply is connected to the circuit keeping the push-to-on switch in OFF condition, the output of the IC remains Read More

Filed Under: Bifocal Electronics, Uncategorized

It is an interesting application of IC 555. The trigger pin-2 of the IC is sensitive to human touch. This property is used in the circuit. Circuit diagram Working In this circuit when supply is connected, the output of the IC remains LOW and the relay remains deactivated. The timing capacitor C1 remains discharged into Read More

Filed Under: Bifocal Electronics, Uncategorized

Feedback

Filed Under: Bifocal Electronics, Uncategorized