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Recent content by dickcruz

  1. D

    Photometer

    SO the incident light causes a photocurrent that goes and gets all its DC components taken off and then goes on to the inverting input and the output is V+ + V- which then is partially fed back via the feedback circuit and gets amplified. Correct me if i wrong. Thanks guys, I dint know...
  2. D

    Photometer

    Finally, just one question, the current between the photodiode and the inverting input of the opamp, would it be in the direction of the photdiode or the opamp. and this current would be alternating right? otherwise the capacitor would not let it pass through. thanks for all the help.
  3. D

    Photometer

    Ok , may i know why im doing that please?
  4. D

    Photometer

    what i meant was like this circuit will have a different vout as the current on the photodiode varies right. so i can, measure the voltage recorded under different sources of light cant i?otherwise wht youre saying is that this will always give a constant voltage indepedant of the the intensity?
  5. D

    Photometer

    could you help me couple it? please. its urgent. i have a week to finish this.
  6. D

    Photometer

    how much of bias voltage should i apply and how will it affect my ouput
  7. D

    Photometer

    I'm trying to measure the intensity of incident light on the photodiode. Why can't i do this
  8. D

    Photometer

    If i were to measure the variation in potential difference as a function of intensity, where would i have to plug the volt meter.
  9. D

    Photometer

    What should the output be like. between 1-3 volts? i need something more presicise
  10. D

    Photometer

    I have a 400mAh, 4.8V . would this do?
  11. D

    Photometer

    I need help in figuring out the amperage of the 5V supply. I also want to know what the output voltage would be like and what the transistor is doing there. Thanks URGENT
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