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  1. npatel

    Photodiode Amplifier

    hi all, i am building a photodiode amplifier with an opamp in inverting mode. The opamp is powered with +/-5V. it has 95 megs of feedback resistor and a capacitor in parallel to prevent oscillations. Can anyone tell me what value of the capacitor should i use to get stable readings. Some...
  2. npatel

    Dual o/p Voltage regulator

    Can anyone suggest a voltage regulator IC that will take in 9VDC @ 1A and produce +5V and -5V @ 500mA as outputs. Thanks
  3. npatel

    voltage amplifier

    Thanks for your reply Audioguru, here are the specs input current ~1A input voltage - 2V output voltage- 7V i do not need any current amplification. I am trying to amplify the voltage output of a Li-ion battery and feed it into a 5V regulator so that when the external power is disconnected...
  4. npatel

    voltage amplifier

    hi all, need to build a voltage amplifier to amplify 1.2 to 4 V to 6-9V. cannot use any opamps. any help is appreciated Thanks
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