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zephyr141

  • one year ago

circuits. help please.

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  1. zephyr141
    • one year ago
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    Determine the value of Vout for circuits a and b.|dw:1441074230030:dw||dw:1441074398505:dw|

  2. zephyr141
    • one year ago
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    i'm a little stuck here. i kind of blanked on how to start...

  3. zephyr141
    • one year ago
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    so i know that a Si diode has a 0.7 V drop and a Ge diode has a 0.3V drop. so i'm confused as to what happens afterwards. at the 2kOhm resistor.

  4. KenLJW
    • one year ago
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    Can't do the first for lack of input Assuming Si on voltage or .7 volts ID = (10 - .7)/(1.2 +4.7) mA = 1.58 mA If this is sufficient for ID on then Vo = 1.58X4.7 V = 7.45 V

  5. zephyr141
    • one year ago
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    whoops. the first one has an input of 12V

  6. zephyr141
    • one year ago
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    so then Vo for the first one would end up being about 9.2V?

  7. KenLJW
    • one year ago
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    Yes, apparantly you got the idea, more accuarate analysis would entail using the Ideal diode with the specification of diode. Could be tricky but necessary if one is to have a signal input as well as DC, you will need to fine the diode signal resistance. This is used as a demodulator ciruit generally for Ampitude Modulation, AM

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