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  1. E

    Freewheeling diode

    How a freewheeling diode to be selected, does it depend on the load?
  2. E

    Buzzer Circuit

    Yes i will be programming in C The end application is variable frequency drive.
  3. E

    Circuit clarification

    Is it possible to simulate the above circuits in LTspice or any other free tool?
  4. E

    Circuit clarification

    Please help me to understand the purpose of the below circuit. P3_3V is 3.3V supply derived from the buck converter, Is it just converting into another power source?
  5. E

    Power Supply Clarification

    I think this is how it looks like
  6. E

    One more schematic clarification

    Another clarification The VDDIO, LDO3_3V3 are the pins of the VR5510 power management ic, https://www.nxp.com/docs/en/data-sheet/VR5510.pdf My question is, I know that LDO3_3V3 is the power output from the VR5510 ic and VDDIO is the input power for the digital interfaces from the datasheet...
  7. E

    Power Supply Clarification

    If both power supplies are connected I can decide a strategy for easy solution.
  8. E

    Power Supply Clarification

    Accept power from whichever is connected. Both supplies are not always connected, only one of them will be connected. As a part of safety in case if both are connected it shall take power from one of them power jack or PS1. This shall be automatically done without manual intervention. The...
  9. E

    Power Supply Clarification

    Thank you for the diagram, what power rating of the diode shall I choose, any normal diode would do? Also a drop of 0.7V across diode will have any impact?
  10. E

    Power Supply Clarification

    Ok I will try with diode, I don't know how to do it so I was thinking if there will any such IC.
  11. E

    Power Supply Clarification

    I want to design a solution where 2 possible sources of power (12V) one using a Power Jack and other using connector are possible, which IC shall i use as switch? Please advise. Two input voltages at the same time may not be possible, but even if it is given i need to protect. Please advise.
  12. E

    VR5510 PMIC module

    I am referring to the VR5510 data sheet https://www.nxp.com/docs/en/data-sheet/VR5510.pdf My understanding of the IC is to provide different voltages to different sections of the board, and the input is from a DC source. One clarification is if i see the pin out diagram and if i read the data...
  13. E

    Buzzer Circuit

    I think this is the correct circuit.
  14. E

    Buzzer Circuit

    I will go through the circuit, but i have already did the following circuit. I am not very much sure of the buzzer specifications, as of now i know it is 5V buzzer. I have also added the fan circuit which is other requirement, is it correct or do i need to add the diode for the fan circuit?
  15. E

    Buzzer Circuit

    I have drawn the buzzer circuit, i still need to work out the resistance values, but on the high level is the circuit correct? When the power to the buzzer is off, it will generate reverse voltage which will make the diode ON and discharge to ground. Is my explanation is correct? The other...
  16. E

    Microcontroller USB clarification

    I am referring to an NXP microcontroller which supports USB 2.0 OTG, i understood that OTG supports both as host and device. So, for the hardware board design, i need to provide connector of USB Type B for it to work as device and also of USB type A connector for it to work as host Is my...
  17. E

    Electric circuit problem

    Thank you very much for suggestions, i updated the schematic accordingly The calculations also able to understand except one doubt When V1 = 5V Q1 is ON, Q2 is OFF VA = 0v -> voltage at node A VB = 5V -> Voltage at node B When V1 = 0V Q1 is OFF, Q2 is ON The circuit becomes The voltage at...
  18. E

    Circuit symbol clarification

    What is the symbol i don't understand the logic, please explain me What are A, B terminals, does it mean 3 is not connected? 1 is always connected to 2?
  19. E

    One more schematic clarification

    I don't understand this as well, what part is this, it looks like kind of switch.
  20. E

    What is the component

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