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  1. L

    comparator hysterisis

    I have this comparator circuit with hysteresis. I have designed it for 0.2V hysteresis and it works fine. But when I design it for higher hysteresis like 1V it output is not correct. The supply voltage for opamp is (12,0). The ref voltage is 5.1V for both cases. Value of R1 is 1K and Rf is 56.4k...
  2. L

    basic inverting amplifier

    Even offset voltage cant cause this much difference.
  3. L

    basic inverting amplifier

    I am trying to simulate a circuit in ORCAD including basic inverting operational amplifier as attached. Where R1 = 1k, R2 = 250k and input is 10mV. The opamp used is LM124. The output should be -2.5V but when I simulate it the output is -167.68mV. What can possibly be the reason of that much...
  4. L

    circuit working

    The diode Dg is used to introduce delaty in rise of Vgs to Vplateau because if Vgs reaches plateau before current decays in Rgd,Cgd branch then it will cause overshoot, mosfet will turn on momentarily and inrush current will flow. What do you think?
  5. L

    circuit working

    Kindly explain the role of diode Dg in attached circuit
  6. L

    circuit explanation

    that capacitor across load is the filter capacitor. there is only one yellow curve which is Vgs
  7. L

    circuit explanation

    I hav attached the simulation results
  8. L

    circuit explanation

    I hav used these values R1 = R2 = 100 ohms C1 = C2 = 10uF R3 = 50k ohms R4 = 106.4k ohms Vref = 6.8V Load = 100 ohms Vinput = 8-14 V (pulse with Tr = 1ms)
  9. L

    circuit explanation

    when i use square wave(8-14V) as source then it dont remove ripple
  10. L

    undervoltage lockout circuit explanation

    I hav designed it for 14V and hav applied square wave to create undervoltage condition. i hav also attached the input and output waveforms
  11. L

    undervoltage lockout circuit explanation

    I have attached an undervoltage lockout circuit. i hav simulated it for a continuous square wave but it works only for first positive cycle. Whats the reason for that?
  12. L

    circuit explanation

    thanks a lot
  13. L

    circuit explanation

    I have attached the circuit now
  14. L

    circuit explanation

    I have found this circuit in Keith Billings book. Can anybody please explain the working and logic behind this circuit
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