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Recent content by etiquoe

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    why should i use getchar() function to make it work? [C++]

    Hi everyone! i started to learn C++. i'm totally newbie :D i'm using Dev C++ compiler. i tried to run some simple examples from tutorials, like this: #include <iostream> using namespace std; void main () { cout << “Hello, World!\n”; } Or this: #include <iostream> using namespace std...
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    [help] current sensing circuit for bldc motor driver

    hi i wanna make current sensing circuit for my 24 V bldc motor driver. i wanna use high side current shunt measurements as AN894 mentioned, but still confused about calculating the components value (Rsense, R1 and R2 for the op amp). this is my power inverter circuit anyone help please..
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    IR2110 test for driving mosfet

    when you turn the high side on and the low side off, and then you want to change the condition become the reverse (turn the high side off and the low side on), you'll need deadtime between the two condition by turning off both high side and low side FET, to avoid 'shoot through'
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    IR2110 test for driving mosfet

    i'm using IRF1010E
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    IR2110 test for driving mosfet

    hi all ... how to calculate time periode needed for charging the bootstrap capacitor, to ensure that the bootstrap capacitor fully charged? thanks
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    how to soften bldc motor start up

    hi.. i'm still working on my sensored bldc motor driver. i need a solution to make my bldc motor start up softer. i'm using open loop speed control method. and one more problem is at above 50% duty cycle no start up failure occur, but at below 50% duty cycle the bldc motor start up often failed...
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    High PWM Low ON scheme

    hi everyone... i need sources which describe in detail about pwm scheme for bldc motor control, especially High PWM Low ON scheme. Have been looking for it for long time.. anyone?? regards
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    [help] bldc motor couldn't start rotating without first trigger

    hi, i'm trying to build 3 phases bldc motor driver (24 V). i'm using 3 hall sensors (separated 120 degrees each other) for rotor position detecting. But the motor almost always doesn't start rotating without triggered by hand first. only in few times it can start rotate without hand trigger...
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    [help] signal conditioning circuit for hall sensor output

    ok, thanks Keith i'll try to re-check and put pullup resistor ---------- Post added at 08:45 ---------- Previous post was at 08:20 ---------- it works Keith, :grin: so grateful
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    [help] signal conditioning circuit for hall sensor output

    i'm trying to build my own controller for the motor. so i try to run the motor using my power inverter, applying the commutation step. when the motor connected to its dedicated controller, the hall sensors output signal is digital (0v/5v). but when i run the motor using my own power inverter...
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    [help] signal conditioning circuit for hall sensor output

    3 phase bldc motor AXHM230K-GFH
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    [help] signal conditioning circuit for hall sensor output

    you mean each hall sensors get separate supply?
  13. E

    [help] signal conditioning circuit for hall sensor output

    hi! i have 3 phases bldc motor with 3 hall effect sensors inside, for sensing the rotor position. here is the output signal from the hall effect sensors: 0 v is detected when the sensors detecting one pole of the rotor magnet and random signal is detected when the sensors detecting another...

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