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Recent content by raghu.khanna

  1. R

    Difference B/w paper,Ceramic and Electrolytic Capacitor

    difference b/w electrolytic and ceramic capacitor Hi ppl.. I am really confused when to use which kind of capacitor.. Case 1: I have a DC+AC signal and want to amplify only AC Case 2: I want to have positive Peak detector and want to have a Capacitor in parallel wid the Resistance.. Kindly help...
  2. R

    Urgent Exam help!!What will be o/p of the circuit????

    Wont the Dc level change and act like an envelop for the signal coming from BZ*?
  3. R

    HELP NEEDED CIRCUIT FOR ULTRASONIC MOTION DETECTOR

    hey u can look up at
  4. R

    Build a motion detector

    building motion detector i amplifiers in the "ultrasonicmotion.pdf " file are used to amplify the small mV signal which u receive from the transducer..each stageVwill help in amplification ...BUT how will we detect the motion ??it will be same as receive the ultrasonic waves from the stationary...
  5. R

    Urgent Exam help!!What will be o/p of the circuit????

    hi neone plizz tell me what will be out put of this circuit..BZ1 is an ultrasonic receiver(40KHZ)..Its urgent
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