Mixing Two Signals

Discussion in 'Homework Help' started by inneedofhelp, Mar 25, 2012.

  1. inneedofhelp

    Thread Starter New Member

    Mar 25, 2012
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    A circuit that combines two or more signals is called a mixer. In this lab, your goal is to build a mixer that combines the signals generated by two voltage sources, V1 and V2.

    V1 is a 1 kHz square wave that varies between 0V and +1V.

    V2 is a 5 kHz sine wave that varies between -1V and +1V.

    Please design a circuit that mixes V1 and V2 to produce Voutput such that
    Voutput ~=1/2V1 +1/6V2

    The resulting output should be similar to that shown in Figure 1. The maximum value of the output is approximately 667mv and the minimum value is approximately -167mv
    [​IMG]
    Figure 1. Desired output waveform
     
    Last edited: Mar 25, 2012
  2. inneedofhelp

    Thread Starter New Member

    Mar 25, 2012
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    Hint: Figure 2 shows a simple resistive mixer for combining two signals. [​IMG]
    Figure 2. Simple resistive mixer Enter your circuit below, using the appropriate configuration of resistors. Please do not modify the wiring or parameters of the voltage sources -- your goal is to take the signals they generate and combine them, not to change what is generated. Run a 5ms transient analysis to verify the correct operation of your circuit.
     
  3. inneedofhelp

    Thread Starter New Member

    Mar 25, 2012
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  4. crutschow

    Expert

    Mar 14, 2008
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    I assume your problem is to determine the correct resistor values. So what do you have so far?
     
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