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voltage controlled switch

  1. R

    LT spice problems

    I would like to fully charge then discharge the capacitor using the two switches . Charge for 50s then discharge for another 50s seconds. Please help me. I am not getting the capacitor to discharge pass half the source voltage.
  2. C

    Voltage Division Question

    Hi guys, I am a total noob and just learned voltage division. I was given this circuit and was wondering why it is appropriate to apply voltage division across the 60 and 20 ohm resistors. I know they are in series which is the basis for voltage division, however the 45 ohm resistor on the...
  3. B

    Voltage Controlled Voltage Sources (VCVS) - Power a Piezo Buzzer

    Hi, I am trying to power a Piezo Buzzer between 3.3VDC and 5VDC. The voltage is being adjusted so the sound is low (at 3.3VDC) and loud(at 5VDC). My attachment can be a little misleading. Alarm_low doesn't suggest the volume is low, just the number of beeps. Same holds true for Alarm_medium...
  4. S

    How to use a voltage controlled switch with Ltspice

    Hi, I would like to make a simulation with 3 voltage controlled switches with Ltspice. Below, the circuit : But, there is a problem. If I put 1V or 0V, like in the picture, in input of the switch there is something in both output. I don't understand why. Any ideas ? Thank you in advance.

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