power supply Transistor current limiter microcontroller controlled


Posted on Feb 5, 2014

Rsense would cause Q2 to conduct if at a threshold (0. 65V assumably) and Rbias will determine how much it will be limited, however that is unclear to me, especially if Rsense will be somewhere highside and just turning on Q2 with my uC seems to not do anything (in simulation at least) How would I come up with the formulas for a variable limit that I can control I would rather


power supply Transistor current limiter microcontroller controlled
Click here to download the full size of the above Circuit.

not have to use a digital potentiometer in place of R2, if I can somehow have sense voltage compared with a comparator with a voltage my uC defines, that`d be great! But how could I start the limiting What do I "turn on" when the sense resistor shows enough current Does Rbias have to be there to limit it to a certain level, and I`ll end up having to use a digipot anyway




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Bike LED Tachometer
    Audio Schematic Frost Detector Temperature Sensor
    Random Musings
    robotic vacuum cleaner
    power supply variable with lm338
    microphone Neumann SM 69 fet
    arduino masterpieces
    dc motor control circuit
    electronic circuit amplifier
    Voltage Level Detector Circuit
    Selecting video op amps
    Full-duplex Intercom
    1.5V LED Flasher Oscillator
    Explanation of Bedini’s Pulse Motor and Generator
    Computer microphone circuit diagram
    Interface circuit fsk modulation and power lines



    Top