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Ultrasonic receiver

Discussion in 'General Electronics Discussion' started by himanshu0128, Apr 5, 2016.

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  1. himanshu0128

    himanshu0128

    10
    0
    Mar 21, 2016
    Hello everyone
    I am making an Ultrasonic Transducer at 40KHz. My transistor circuit has 555 timer IC and couple of transistors to obtain to square pulse of 60% duty cycle with 10Vp-p amplitude. I made a receiver circuit using transistor and some resistors and capacitors, it also works fine upto 30cm. However Now i want to replace that transistor with TL081 Opamp. Pls suggest some circuit to use TL081 as an amplifier at 40KHz with a required gain of atleast 50.
     
  2. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    Look up op amp bandpass filter.

    Bob
     
  3. Colin Mitchell

    Colin Mitchell

    1,417
    312
    Aug 31, 2014
    Just buy it ready-made for $2.50 post free on eBay.
     
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