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Recent content by jeffttan

  1. J

    Really Simple Transistor Circuit Woes

    current gain is at 10... if you want a current of 0.41 amps on the bulb, you might want to put a 100 ohm resistor at the base.
  2. J

    Transformer Parameters

    Hi Guys, Can someone teach me what parameters are there to consider when looking for a transformer? Thanks!!
  3. J

    Where to start studying card readers?

    Re: card readers no. compact flash is a type of flash memory.
  4. J

    Where to start studying card readers?

    card readers Hi, I need help in the topic card readers... Does any body now where I can start learning? Thanks in advance
  5. J

    Energy and Power of a Signal

    why do we integrate the energy of a signal from - infinity to positive infinity?
  6. J

    Resistor problem with LEDs

    i think you should include the voltage drop across the diode in your calculation of the current using ohms law...
  7. J

    Energy and Power of a Signal

    Hi Guys, I'd just like to ask what does the Energy of a signal mean? and the power of a signal? thanks
  8. J

    Is the load impedance provided in the solution CORRECT?

    your answer is correct... i think there was only an error in the conversion on the part of the author. the impedance in polar form obtained by the author when converted to rectangular form is the same as yours...
  9. J

    Is the load impedance provided in the solution CORRECT?

    hi, the answer in gray is correct. can you post your solution so that we can see what the difference is? or what is wrong.. thanks
  10. J

    Why some appliances have three pin plugs?

    plugs the pin is termed prong... two prong, three prong plug
  11. J

    balanced modulator-reason for its name

    i think the output of a balanced modulator is a double sideband suppressed carrier AM signal
  12. J

    Low pass Active filters

    Hello, the image you have posted does not show up. thanks:)
  13. J

    220V is it Rms or peak ??

    220v rms? It is in RMS... same as 110V in power lines
  14. J

    difference between volt and power amplifier

    the type of amplifier depends on the configuration of the transistor circuit
  15. J

    How to check a Capasitor using digital multimeter?

    to check if a capacitor is working properly or not, you can use an ohmmeter. first, short the terminals of the capacitors to discharge the stored charge of the capacitor. then connect the ohmmeter across the capacitor. the ohmmeter should move from 0 ohms to large resistance or open ckt. if it...

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