1. M

    advice on a current measurment circuit

    Here's a circuit i've designed for measuring approximate current flowing through a mosfet. I have a uC that has no ADC, it only has a comparator and an internal bandgap reference voltage. So i can't just connect the drain to an ADC input and divide the voltage by Rmosfet. The line marked "PWM"...
  2. H

    Window Comparator_Pull_Up Resistor_Comparator with Push Pull Output

    Dear Team, Do we need to use pull up resistor when designing a Window comparator using a comparator IC with push pull output(like TLV1805 ). Regards HARI
  3. Sudip Mandal 2

    problem in low battery detector circuit

    I have designed a low battery detector circuit using low power comparator MCP6541 for a 4.2V Li-ion battery. This circuit checks whether the battery voltage if the battery voltage is lower than 3.5V then it will glow LED. Check the circuit below. The circuit is working properly but the...
  4. A

    Driving a mosfet with Comparator

    Hello all, i am trying to get a comparator working with Hysteresis. A 500mV is the target between Vlth 2v and Vhth 2v5. Can somebody please help me with the Hysteresis part with an explanation for the attached LTSpice simulation.
  5. unistudent

    comparator circuit help

    How to make a full bit (2bit) comparator circuit using ONLY nand gates. I was able to do a 1bit comparator using only NAND gates, but how about for 2 bit, 4 bit? Wouldnt it be really large. I'm not sure if my class expects us to draw this out. we can't even use xor gates or inverters. i have...