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    Hall sensor time out calculation

    I want to measure the speed using the hall sensor, one part of it is to detect hall sensor time out. I want to set around 150ms as hall timeout, that is there is no hall transition for 150ms. So, i wanted to confirm 150ms corresponds to 1000/150Hz = 6.6 Hz? Am i correct or any other factor to be...
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    Voltage calculations in Fixed Format

    I want to perform the voltage divider calculations in fixed format, please advise if my calculations are correct. Vout voltage is given to the microcontroller, and i want to calculate V1. Vout = V1*R2/(R1+R2) V1 = (R1+R2)/R2Vout V1 = 108/8*Vout = 13.5*Vout -> eq1 13.5 constant is in Q4.12...
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    H bridge circuit simulation in LTSpice

    I am referring to the video SVPWM and at 6.06 I tried to simulate the same circuit in LTspice, two issues i am facing a. I am not able to create a neutral point by connecting two DC power supplies, is neutral here same as ground? b. The voltage across AB is not VDC or 15V which is expected...
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    CAN message Intel and Motorola format

    I have several times read through the documents to understand the motorola and intel format for creating the CAN dbc file or to interpret the CAN messages, but i always end up in confusion. Please help me with any technique to remember it. One of the documents i always refer in case of confusion...
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    Simulation of MOSFET

    First time i am simulating the MOSFET using LTSPICE, please help me to understand the output voltage i am getting, it is around 14.75 V. How is it? i selected the NMOS in the library.
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    Clarifications on the schematics

    I am trying to run motor using the ST board B-G431B-ESC1 and the schematics are available in the link provided(I could not attach schematic as it is big). But i have several doubts, a. There is OUT1 signal on page5, my understanding is it will be between 0 and V+, 0 when Low MOSFET is ON and V+...
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    Electric circuit analysis

    I am trying to analyze the below circuit The circuit is basically for reading the DC Bus voltage from the battery voltage, as of now i have given 12V only for testing purpose. My question is when i simulated the voltage across R2 it is 0.75V, what is the impact of having the capacitor C1...
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    Difference between Board Supply and Motor Supply

    I am referring to the NXP motor controller evaluation board NXP motor evaluation board and when i refer the quick start guide Quick guide the external power supply is 8 - 18V, but the PM motor connected is 24V. My understanding is 24V or motor voltage is generated from the external power supply...
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    Sensor clarification

    I have seen a data sheet, it has got 3 pins supply, ground, output and it is hall type sensor. The output type is Open drain- digital, Output. He is also giving Output high -> 3 - 4V Output low -> 0.5 - 1.0V. Battery open -> 1 - 2.8V Ground open -> > 4.5V My doubt is if i want to interface to...
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    Battery Charging Circuit

    I need to design a battery charging circuit, the initial study i have done this is what i need to do a charging circuit which i have to come up, circuits for voltage and current feedback. Is my initial understanding correct? This is for Li-Ion battery, if it is 5AH, what are the other...
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    Freewheeling diode

    How a freewheeling diode to be selected, does it depend on the load?
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    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?
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    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.
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    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...
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    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...
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    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...
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    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?
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    One more schematic clarification

    Sorry that I have to post multiple threads on schematic clarifications. Now I am finding the schematic with 0 ohm resistor. What does that mean? Will it have any impact on the functionality? Was placed for some other purpose?
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    What is the component

    Please help me to find out what is the component .It looks like a ferrite, but the symbol is different.
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    Electric circuit problem

    I am trying to solve the below circuit, It was created by me, may be it is wrong. These are the equations i have written if the input is V1 is 5V Q1 is ON Ib1 = (5 - 0.7)/1k = 4.3mA 5 - 5Ic1-Vce1 = 0 -> eq1 5 - 5Ic2 -Vce2=0 -> eq2 5 - 5Ic1 - Ib1 -Vbe=0 ->eq3 can i assume Q2 ON in the above...
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