Electronic oscillator division types and use

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Electronic oscillator division types and use Electronic oscillator division types and use Introduction to oscillator An oscillator is a amplifier and it is a close loop circuit or network. It uses the Positive feedback. It is not require the externel signel and generate the a desired frequency A oscillatpr acts like generator, It oscillates the constant amplitude and frequency. Oscillator can generate the frequency upto gigahertz. Classification of the Oscillators Oscillators are classified based on the type of waveforms generate from the oscillator, range, frequency, parameters used. Based on Output waveforms. Based on circuit components. Range of operating frequency. Based on feedback uses or not uses Types of oscillatprs LC Oscillator Har
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Op-Amp as Inverting Amplifier

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Inverting amplifier using op-amp

Inverting Amplifier

  • An amplifire which gives 180' phase different between input and output is called inverting amplifier
  • The block diagram of inverting amplifier
  • By the virtual ground concept the two input terminals are always at the same potential
  • As node B is grounded and also node A is at ground potential, from virtual ground concept
    • I=Vin-Va/R1=Vin/R1 (as Va=0)....................equation (1)
  • The op-amp input current is always zero hence entire current flows through the feedback resister Rf
  • from output side
    • I=Va-V0/Rf=-V0/Rf (as Va=0)..........................equation (2)
  • from equation 1 and 2
    • Vin/R1=-V0/Rf Av=-Rf/R1
  • -Rf/R1 is the gain of the amplitude while negative sine indicates that the polarity of the output is opposite of the input hence this called inverting amplifier
  • inverting amplifier waveforms

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