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Recent content by elektrovoz

  1. E

    I-V characterizer schematic

    Using voltage source and check the current is a necessity for me because I need electrical forming before measurement. How to check amplifier stability? According to data-sheet it works well on 75Ohm cable... May be I need some kind of filter on output?
  2. E

    I-V characterizer schematic

    Thanks, I forgot to change. OK, thanks. Hmmm... Why not? I need to form fast voltage pulses about 10V/10ns, so i need enough current to recharge all parasitic capacitance.
  3. E

    sine and triangle waveform amplifier circuit

    And output stage on transistors.
  4. E

    sine and triangle waveform amplifier circuit

    ADA4700-1, 100 V Precision Operational Amplifier
  5. E

    I-V characterizer schematic

    You are right, I can use standart laboratory equipment, but I don't have scope and generator with fast external control. And one more thing - I need to control overcurrent during I-V measure. I think standard equipment is not so fast to provide feedback from scope to disable generator in case of...
  6. E

    I-V characterizer schematic

    My apologize, but I have lost some details on the topic start. My "diode" is not very simple. It is a non-silicon hetero structure which need some kind of electrical training. I need to form fast train pulses with programmly specified form and measure I-V characteristic after that. Next step is...
  7. E

    I-V characterizer schematic

    Understandable. My hope was that somebody will quickly looks at the schematic and find errors at first glance.
  8. E

    LM4950 audio amplifier clicking sound and signal distortion?

    Beacuse of the magnetic field. It appears when you apply the signal and some parts of your transformer are shifted over others which are fixed better. Example: \ / -> ||
  9. E

    I-V characterizer schematic

    Hi edaboard, How I developing hardware for characterizing 2port devices, primary special kind of diodes. It needs to be accurate enough and works at high speed, more than 10Msamples/s. Please, review my schematic :)
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