12th Bifocal Electronics Syllabus Download the FREE copy of HSC Board prescribed syllabus of bifocal electronics (C2) for XII standard. This syllabus is revised upto 2016 and will be applicable for for all next examinations of HSC Board, until you see any changes on this page. This is the syllabus of bifocal vocational electronics with […]
Chapters-wise details of XII Standard The Government of Maharashtra started Vocational Electronics (Bifocal Electronics) course at +2 level in 1978-79. But up to 1999 there were no revisions in its prescribed syllabus. However, due to vast modernization and fast development in practical and theoretical electronics, it was reconsidered by the Board of HSC Examination, Pune; […]
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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 […]
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 […]