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  1. J

    110V AC/DC TO 13.5 V DC

    Hello All, I am working on a project where I have 110V AC/DC both from same point sometime its 110V ac & 110V dc. Now the task which i have need to convert this input as 13.5V pure DC because our device works only on 13.5V dc. Please suggest me some IC or some way to overcome from this.
  2. C

    Unknown Subcircuit After I downloaded a MOSFET. asy file in the directive from LTspice simulation

    Hi I have a strange question. I downloaded a MOSFET LTspice model (.asy) from official website and saved it in the directive. However, It still shows "unknown subcircuit." If I use ideal NMOS4, the simulation works. Could someone help me with why it happens and how to deal with it? I attached...
  3. U

    How to use transistor as a variable Regulator?

    I'm designing a variable power source from 5V to 30V with 600mA. Input voltage is VIN = 36V. I tried the below circuit. VREF is given from microcontroller DAC. I tried using N-MOSFET, P-MOSFET, NPN, PNP (with modifications). I set a the output voltage as 20V. This circuit works fine with no...
  4. Bhanu2626

    Does the MOSFET in the Schematic will work fine?

    I using the MOSFET IRFB3004PBF switching. 56.2V is a source voltage coming from the charger and 48 is the nominal voltage of the batter. switch S1 is for switching Vgs. Vgs=5 v. Rgs=10k ohms (connected to the gate terminal and battery ground). battery is 13s3p Nominal=48v Peak=54.6v Will MOSFET...
  5. A

    Simulating inductor with double transistor switch in LT Spice, getting unexpected voltage output. Problem with model?

    Hello! I'm using a SIMFET model as switches and ideal diode models in my circuit. My specifications are t0=40ms and T=100ms. I expect the voltage across the inductor to be Vcc=75V from 0 < t < t0, and for it to be -Vcc when the transistors are off between t0 < t < T (This is the theory...
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